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WILL GIVE BRAINLIEST PLEASE HELP! Please select the word from the list that best fits the definition stage in a star’s evolution formed as the core of a main sequence star uses up its helium and the outer layers escape into space

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Answered by answersmine AT 22/10/2019 – 03:07 AM


sorry I’m late
white dwarf is late stage in the life cycle of a comparatively low-mass main sequence star; formed when its core depletes its helium and its outer layers escape into space, leaving behind a hot, dense core. so the that would be the most reasonable answer thanks for posting, hope i helped

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Identify the scientist that discovered the theory of evolution

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Identify the scientist that discovered the theory of evolution

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Which is a good example of adaptive evolution? The red fox that inhabits farmlands and forests has a red coat, but its relative, the kit fox, lives in a desert has a sandy–colored coat. Two birds of the same species separate during their migratory flight. After several years, their descendants are quite different from each other. Two species of fish try to swim against the current near a waterfall. One survives, but the other doesn't.

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Which is a good example of adaptive evolution? The red fox that inhabits farmlands and forests has a red coat, but its relative, the kit fox, lives in a desert has a sandy–colored coat. Two birds of the same species separate during their migratory flight. After several years, their descendants are quite different from each other. Two species of fish try to swim against the current near a waterfall. One survives, but the other doesn’t.

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Which milestone in the evolution of animals classifies them as either vertebrates or invertebrates?

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In tropical rain forest, the animals will have to deal with higher temperatures and greater rainfall. One example of an adaptation they might need is a thin, water-proof coat. This will prevent heat from becoming trapped inside their fur/hair/feathers, and the water-absorbing coating will allow water to stick to the inside of the coat without being absorbed, where the water will absorb the heat instead of themselves, and will cool the through evaporative cooling (heat release through evaporation)

In a deciduous forest, there is much colder temperatures, and significantly less rainfall. These animals would likely want a thicker water-proof coat. This is because the thicker coat would allow heat to become trapped, keeping them warm in the winter, and the water-proof coating prevents water from freezing in their fur, making them colder.

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MULTIPLE CHOICE VERY EASY!!!!! Which statement about the members of a population that live long enough to reproduce is consistent with the theory of evolution by natural selection? A. They are the ones that are best adapted to survive in their environment. B. They will perpetuate unfavorable changes in the species. C. They transmit characteristics acquired by use and disuse to their offspring. D. They tend to produce fewer offspring than others in the population.

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In tropical rain forest, the animals will have to deal with higher temperatures and greater rainfall. One example of an adaptation they might need is a thin, water-proof coat. This will prevent heat from becoming trapped inside their fur/hair/feathers, and the water-absorbing coating will allow water to stick to the inside of the coat without being absorbed, where the water will absorb the heat instead of themselves, and will cool the through evaporative cooling (heat release through evaporation)

In a deciduous forest, there is much colder temperatures, and significantly less rainfall. These animals would likely want a thicker water-proof coat. This is because the thicker coat would allow heat to become trapped, keeping them warm in the winter, and the water-proof coating prevents water from freezing in their fur, making them colder.

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ANOTHER EASY MULTIPLE CHOICE!!!! WORTH 12 POINTSIn the figure below, flowers and pollinating insects are examples of: A. punctuated equilibrium. B. convergent evolution. C. coevolution. D. adaptive radiation.

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ANOTHER EASY MULTIPLE CHOICE!!!! WORTH 12 POINTSIn the figure below, flowers and pollinating insects are examples of: A. punctuated equilibrium. B. convergent evolution. C. coevolution. D. adaptive radiation.

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WORTH 25 POINTS PLEASE ANWNSER AND DONT GUESS Fossils of the coelocanth, a primitive fish, date back about 140 million years. Modern coelacanths are virtually identical to their fossil ancestors. This species most likely evolves through the process of A. convergent evolution. B. punctuated equilibrium. C. coevolution. D. gradualism.

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WORTH 25 POINTS PLEASE ANWNSER AND DONT GUESS Fossils of the coelocanth, a primitive fish, date back about 140 million years. Modern coelacanths are virtually identical to their fossil ancestors. This species most likely evolves through the process of A. convergent evolution. B. punctuated equilibrium. C. coevolution. D. gradualism.

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Charles Darwin’s theory of evolution by natural selection explains each of the following EXCEPT how A. evolution takes place in the natural world. B. species can become extinct. C. species descend from common ancestors. D. inherited traits are passed from parent to offspring.

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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What is thought to be true about the three domains of living things? A. They diverged from a common ancestor before the evolution of the main groups of eukaryotes. B. They diverged from a common ancestor fairly recently. C. They did not have a common ancestor. D. Domains Bacteria and Archaea evolved after the main groups of eukaryotes.

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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Rapid evolution of a small population to produce a new species is an example of:

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The right answer is Transgenic organisms can produce a desired product that may benefit other organisms.

A transgenic organism contains DNA combining  stably integrated in all its cells. In other words, the organism, be it a plant, an animal or a microorganism, has a new piece of DNA embedded in it. a chromosome in each of its cells. This “new piece” of DNA usually contains a gene from another organism (plant, animal or other) that has been modified to be expressed in the new  organization. A transgenic organism may even possess the DNA of another organism of the same species. The inserted gene can be called the transgene.

Currently, diabetics are treated by injecting insulin from either a healthy human donor or cultures of genetically modified (transgenic) bacteria that secrete the protein.

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Earth’s climate ________. select one: a. has been stable over the history of the planet b. is changing as a result of natural and human processes c. will stabilize over the next century, according to the predictions of most scientists d. has changed only once due to the evolution of green photosynthesizing plants e. history is undeterminable because there is no method of studying climatic history of the planet

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Natural Forces Affecting the Driver:

1. While the car stops, the person continues moving the way that the car were moving and then hits the obstacle in the car or the person can be thrown out of the vehicle. If the person wears belt, he will stop moving with the vehicle and won’t hit the obstacle.

2. We count approximate kinetic energy using the formula K = v^2. So the vehicle which is moving at 30 mph will have four times less kinetic energy than vehicle which is moving at 60 mph. If they have the same road conditions, the breaking distance will be four times as great for the car moving twice as fast.

3. Kinetic energy depends on object’s mass and velocity and it has direct relationship with the stopping distance. The lesser mass of the vehicle = the lesser kinetic energy and lesser stopping distance. => If both vehicles have the same velocity, then small vehicle has lesser kinetic energy than large vehicle.

4. We know that kinetic energy has this relationship with velocity K = v^2. So the best way to prepare to enter sharp curves in the roadway is to lower the speed. The most appropriate speed is 20-30 mph, but it depends on road conditions and car’s breaks condition.

5. Car crashes can happen with everyone so the best way is to be prepared. First the driver should wear a seatbelt while he’s driving. He should check his tires and breaks condition regularly. And also it’s important to slow down the vehicle while entering sharp curves. Without following these rules, the driver can get catastrophic injuries in a car crash.

Signs, Signals, and Pavement Markings: 

1. It doesn’t matter where you go. All you need is to learn highway code. It’s very different to know the meanings of every road sign. Also, it’s necessary to check your car’s conditions and you should take some spare parts for your car in case of accidents. So wherever you go, it’s important to be prepared.

2. You should stop before crossing and take few minutes to make sure there is no train approaching. If there is no train approaching, you can pass a railroad crossing. If you see approaching train, you should wait until it will pass a railroad crossing.

3. You should stop before the lights and wait to check the traffic movement and signs. Make sure that everything is safe and pass the intersection. Don’t move fast to avoid accidents.

4. Flashing yellow light means that it’s not necessary to stop but you should to pay attention on the traffic movement. So it would be better to yield before the lights and make sure if it’s safe to move. After that you can cross the intersection.

5. The line change means that the lane changes and you can’t cross solid lines. Pay more attention on road marking because it shows how you should behave on the road or highway.

6. As you approach the next exit and  your passengers need to use the restroom and get some food, you should look for green signs which indicate food and rest stops. You should to slow down if you don’t want to skip the sign.

7. When you take the exit ramp off the expressway and merge onto the next road, you see yellow lines dividing the roadway which indicates that there is oncoming traffic and this is a two-way highway. 

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In the video for this lab we discussed the evolution of cheetahs. cheetahs evolved to be faster because faster individuals could catch the gazelles. how do you think the population of gazelles evolved while the cheetahs were evolving to be faster? explain how this evolution would have occurred.

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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Hurry help me !!! Species are disappearing at an accelerating rate through human action, primarily habitat destruction but also pollution and the introduction of exotic species into residual natural environments. I have said that a fifth or more of the species of plants and animals could vanish or be doomed to early extinction by the year 2020 unless better efforts are made to save them. . . . As the last forests are felled in forest strongholds like the Philippines and Ecuador, the decline of species will accelerate even more. In the world as a whole, extinction rates are already hundreds or thousands of times higher than before the coming of man. They cannot be balanced by new evolution in any period of time that has meaning for the human race. What message does the author convey in this excerpt? Humans need to take action to end further destruction of the natural environment. In the coming years, humans will put forth stronger efforts to save plants and animals. The extinction of plant and animal species is problematic in the Philippines and Ecuador. In recent years, the extinction rate for many animal species has significantly increased.

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Hey there!

Correct answer is D. Comma or Period Inside Rule

A. Question mark or exclamation point inside: those are not really necessary.

B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is already a comma.

C. Question mark or Exclamation Point Outside Rule: would not work, becase it is an very polite and affirmative sentence.

D: A comma or period inside rule: actually, just a comma would work. Please, Cooper’s dad requested, go… Cooper’s dad requested must be in between commas as it is a vocative.

Hope this helps

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The type of selection that favored progressively larger brain size in human evolution is _______ selection

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Enzymes are proteins that are biological catalysts

They reduce the activation energy required for a reaction to occur and thus speed up a reaction

Temperature, above a certain point (optimum temperature) causes them to break down and they are gradually destroyed (denaturing)

They work best at a particular pH (optimum pH) and are once again destroyed by low or high pH’s

They have a specific shape, with one particular part, known as the active site, that is specific to the substrate they speed the reaction of. These means they are specific to one type of reaction.

They aren’t used in the reaction so they’re re-usable.

If it isn’t one of these then it is not one of the properties of enzymes

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A sociobiologist could argue that _____ is a sexual disorder that served as an asset for procreation and survival in the process of evolution.

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There are many possible outcomes.

I think, there are many possible outcomes here.

Normal Gene: N
PKU Carrier gene; P

If their one of their parents have pku, but deactivated, their genotype might be like this; NP (Carrier Parent) × NN (Normal Parent). If the carrier parent do not have PKU, the PKU gene is recessive and it is impossible for someone to be acquire the disease. If we do this in a punnet square, the Genotypic ratio will be; 0 NN, 0 PP, and 4 NP

But, if both parents do have PKU recessive in their genes, their genotype will be like this; NP (Carrier parent) × NP (Carrier parent) it is possible that one child will not be a PKU carrier, one child with PKU, and 2 carriers of PKU. If we do that in a punnet square and find their Genotypic ratio, it will be 1 NN, 1 PP, and 2 PN.

So, if we base the final data on the second setup, the percentage will be ;
25% Normal
25% With disease
50% PKU carrier

that’s all I know. have a great day 🙂

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When lions prey on a herd of antelope some of the antelope are eliminated which part of the theory of evolution can be used to describe this situation?

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Three ways that the circulatory system and respiratory system are protected: The cutaneous system, the thoracic cage, and the immune system.

The cutaneous system:

The skin is the largest organ of the body and is the external interface with the external environment.

==> In its role of barrier, the skin ensures:

* physical and immune protection against external aggressions (microorganisms, foreign substances, traumas),

* protection against U.V. radiations,

* protection against liquid losses of organisms living in an open-air environment,

* protection against the cold (hypodermic fat layer and organized hairs in fur).

==> It participates in the thermoregulation of the body by:

evaporation mechanisms provided by eccrine sweat glands,

radiation mechanisms ensured by an organized vascular system in anastomotic plexuses supplemented with arteriovenous shunts.

Ribcage :

The rib cage has a protective role for internal organs: Due to its shape and constitution, the rib cage protects vital organs such as the heart and lungs, as well as certain abdominal organs.

It also has other roles:

Role of mobility. Its constitution, partly cartilaginous, gives it a flexible structure to follow the movements of the spine.

Role in breathing. The flexible structure of the cage, as well as the various articulations,  gives him large amplitudes of movements, participating in respiratory mechanics. Various breathing muscles also sit on the rib cage.

Immune system:

Set of cells whose role is to defend the body (including the circulatory and respiratory system) against infections.

The immune system’s role is to defend the body against infections. When it is invaded by a foreign organism (virus, bacteria) or by foreign molecules (pollen, for example), the immune system reacts very quickly to get rid of it. Unlike other systems, the immune system consists of isolated cells that are not tissue.

The lungs represent the largest epithelial surface of the organism exposed to the external environment. During respiration, the airways and pulmonary alveoli are constantly in contact with a multitude of particles and microorganisms conveyed by the air flow and sometimes deposited on the surface of the tracheobronchial tree.

Unlike other epithelial surfaces such as the skin or the digestive tract, the cells are sterile.

This phenomenon results from a complex system of, particularly effective defenses. These are anatomical features of the respiratory tract and the defense system.

The blood in the circulatory system ensures the defense of the body (thanks to the cells of immunity) including the blood itself.

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Recall how Alfred Russel Wallace’s theory compared to Darwin’s theory of evolution by natural selection.

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Answer:

1. The correct answer would be A. The fact that the bone structures are similar supports the theory that the animals shared a common ancestor.

Homologous structures refer to the organs or structures which are similar in structure but perform different functions as a result of adaptation towards different ecosystems.

2. The correct answer would be B. Eukarya

The organism contains a nucleus and other organelles including chloroplast. Thus, it can be correctly placed in Eukarya (eukaryotes).

3. The correct answer would be C. Plants have a two-part life cycle, spending part of their lives in a diploid phase and part in a haploid phase; humans spend their lives in a diploid phase and produce gametes that are haploid.

Plants usually show alternation of a generation that is, two-part life cycle. Humans do not show alternation of generation. They are diploid organisms which produce haploid gametes for reproduction.

4. The correct answer would be A. to defend the body from invading pathogens

The immune system is a defense system of our body. It protects our body from infections and toxins. It includes organs like thymus, lymph nodes, bone marrow et cetera.

5. The correct answer would be B. Plants produce glucose that can be broken down by cellular respiration; animals digest foods to obtain glucose for use in cellular respiration.

The energy demands of animals, as well as plants, are met by the process called cellular respiration. Glucose is the major substrate for this process. Plants are able to synthesize glucose through photosynthesis however, animals need to digest food to obtain glucose.

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Evolution of Management | Concept of Management

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Management

Describe

Evolution in the management is about the progress and changes in the concept of management. In the past system of management was different that changed gradually with the time and introduction of the new concept. In the course of management, I learned that how the work of managers got changes from the 19th century to the 21st century. In the 19th century, the classical perspective of management was common in the society. Classical perspective was based on three major sub-fields administrative principals, scientific management and bureaucratic organizations systems. In this course, I also learned that in bureaucratic organizations system main emphasis was on rational authority and formal structure of the organizations (Martin, 2005). Mary Parker Follett was the advocate of humanistic perspective. Humanistic perspective was introduced after the bureaucratic organization system. Humanistic perceptive was in favor of human behaviors and norms. Theory X and Theory Y are the most important theories of management that were based on the human resources perspective (Roth, 1994). Theory X claims that human beings dislike work and try to avoid work responsibilities at the workplace. However theory Y claim that average human being not inherently dislikes work and taking responsibilities at workplace other factors also affects their behavior. However after that concept of management was again changed to the behavioral sciences approach. Behavioral science approach applied the concepts of the social sciences in the workplaces to make the management process more efficient. The journey of evolution does not end here it is also changing even in the present age (Price, 2011). New concepts are introduced that brings changes in the concept of management to make the management system more efficient and effective. Therefore to meet new changes management sciences was introduced after the World War 2. Management sciences supported the application of mathematics and statistics in the management system. According to this approach, quantitative techniques need to be used in the organizations for effective decisions making process.

Evolution of Management

Interpret

In a management course, I learned about the evolution of the concept of management that is really supportive of me as it increased my knowledge towards the management. Before this course, I was not familiar with the old concepts of management. New knowledge supported me in learning the actual meaning and purpose of the management. Through this, I learned that management is not only limited to the decision-making process, in fact, it also relates to the behavior and norms. In management, the behavior of the employees, internal motivation and external factors are also important. As in the theory, X and Y two different perspective of the managers are discussed that draw different impact on their employees and output of their workforce (Griffin, 2015). Managers that consider their employees dumb and demotivated employee with work avoidant behavior will treat their employees in a different way as compared to the manager who considers that employees want to take responsibility. From the course, I also learned in the past authority was as important as it is in the present age. In bureaucratic organizations, authority delegation was fixed to make the workplace more rigid as at that time employees were considered as the worker only (Martin, 2005). However, when I compared that concept with the current management concept I find out that in present times employees are treated as equity for the organizations. Now the organizational structure is flexible that consider the suggestions of lower level management also. Decision-making process is now not only limited to the top level management only. Every person in the organization has their role and contribution towards success. In short, my experience and learning from this course enforce me to learn more, think in a broad way and find out the right way of management.

Evaluate

In my views, the learning I got from this activity and course has significant value for me in understanding the concepts of management. I learned everything in detail. I viewed the changes that generated the process of evaluation in a critical way that supported me in understanding how each new change in concept completely changed the overall concept of management. As the old concept of management is quite different from the new one. My detailed learning of evolution in management concept will support me in future also when I will start my career in management.

Plan 

The learning experience will serve me in many ways in the future. Through this learning, I can understand the course of human resources management and other managed courses efficiently. Other than that I will also use this information in future in my professional life. My aim is to go into the field of management after the completion of studies. My learning from this evolution in management will help me in selecting the most appropriate way of management at the workplace. Through this, I learned the weakness and strengths of each way of management that will support in taking initiative.

You may also study:  

Benefits of Change Management in Organization

Pros and Cons of Management

Management Concepts in Organizational Culture

References
  • Griffin, R. (2015). Fundamentals of Management. Cengage Learning. Retrieved 08 20, 2018
  • Martin, J. (2005). Organizational Behaviour and Management. Cengage Learning EMEA. Retrieved 08 20, 2018
  • Price, A. (2011). Human Resource Management. Cengage Learning. Retrieved 08 20, 2018
  • Roth, W. (1994). The Evolution of Management Theory: Past, Present, Future. CRC Press. Retrieved 08 20, 2018



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