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Which of the following was an early realization that gave rise to Darwin’s theory of natural selection? A. The earth is younger than previously thought. B. The earth and its organisms have changed through time. C. Organisms do not appear to be closely related. D. Most organisms share the same habitat.

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Your answer is B. The earth and its organisms have changed through time

it is not:

A) because Darwin thought the world was much older than was previously thought

C) because Darwin found that many had similar charecteristics

D) NOT EVERY ORGANISM IS IN THE SAME PLACE, CLIMATE, etc

hope this helps 😀

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Which principle states that two species in the same habitat cannot have the same niche? niche exclusion principle competitive exclusion principle habitat exclusion principle population exclusion principle

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Answer: competitive exclusion principle

The competitive exclusion principle suggests that no two species can occupy the same ecological niche (functional role an organism performs in an ecosystem like type of food, and habitat chosen for living) in the ecosystem, the one which is stronger and superior over the other is likely to derive the resources and exhibit better chances of survival.  

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Two different species in the same ecosystem can share a _____. population habitat carrying capacity niche

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Two different species in the same ecosystem can share a _____. population habitat carrying capacity niche

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Read the following passage: Each day, hundreds of animals lose their habitat as trees are cut down. Every year, our planet loses an area of forest the size of Panama. When once-fertile soils have been exposed to sun and wind for several years, they turn to desert. Which of the following sentences uses the same type of structure as in the passage? A. It’s clear from his tone in chapter 2 that the author dislikes large corporations. B. The patient will immediately spike a fever, followed by fits of chills and sweats. C. Another reason why banks charge fees is to discourage carelessness. D. An example of changing legislation can be seen in the case of Smith v. Ohio.

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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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7. Researchers captured and tagged 45 deer before releasing them back into their habitat. Several months later the researchers returned and captured 30 deer, 8 of which had tags. Use this information to estimate the total deer population for this area.

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You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

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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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Which factor affects the same percentage of a population regardless of the population’s density? space food flood habitat?

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Answer: Ecosystem diversity

Explanation:

Ecosystem diversity deals with the variation in the ecosystem within a geographical location and its sum total impact on the human population and environment.

Ecosystem diversity is a type of biodiversity. Variation in the ecosystem found in a region or variation can be seen over the whole planet.

It is one of the most largest scale of biodiversity, in which there is a variation in the genetic variation and species.

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Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources. These are all ways that . a.humans have intervened to both manage and manipulate the environment to ensure species survival b.nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem c.cities have been form to keep wildlife in public

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Posted in Biology

Answer : Option B) Nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem.

Explanation : From the above information given, it can be simply concluded that humans have changed the environment around them. The human habitats are very different from the nonhuman life habitats. They have their own ecosystem designed for their comfort. This impacted the nonhuman life as they have different ecosystem in cities than in the forests.


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Posted in Biology

1. Do the location of landforms (mountains, trenches, and volcanoes), earthquakes, and mineral deposits have anything in common? A. No, their placement is scattered all over the globe B. Yes, most appear to occur on the edges of plates 2. What is the ring of fire (besides a song by Jonny Cash)? A. An area located in the Atlantic Ocean that is home to some of the world’s most active volcanoes, deepest ocean trenches, highest mountains, and richest mineral deposits B. An area located in the Pacific Ocean that is home to some of the world’s most active volcanoes, deepest ocean trenches, highest mountains, and richest mineral deposits C. An area located in the Indian Ocean that is home to some of the world’s most active volcanoes, deepest ocean trenches, highest mountains, and richest mineral deposits D. An area located in the Arctic Ocean that is home to some of the world’s most active volcanoes, deepest ocean trenches, highest mountains, and richest mineral deposits 3. How does a trench occur? A. When one plate is pushed underneath another plate B.When one plate gets too thin and collapses under another plate C. When a hot spot occurs at that location causing the lithosphere to weaken D. When a transform boundary ends 4. What type of convergent boundaries make mountain ranges? A. Oceanic – Oceanic B. Continental – Continental C. Continental – Oceanic 5. What type of boundaries make rift zones? A. Convergent B. Divergent C. Transform

1- B
2- all of them
3- A
4- B
5- B

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Posted in Biology

What is the primary function of most bacteria in a food web?

Answer:

The primary function of most of the bacteria in the food is to decompose the materials present in the environment.

The plants and animals that die in the environment is consumed by the bacteria so that the nutrients can be recycled in the soil.

These bacteria are present everywhere because all the living organism die a day.

The bacteria and fungi digests the organic part of the ecosystem. This is the primary function of the bacteria that is found in the food web.

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The original population of brown spotted deer declined drastically after their forest habitat was flooded. After frantic efforts over three decades by the forest authorities to revive the dwindling population, it did bounce back. Now the deer population is as huge as it was three decades ago, but it shows a decreased amount of genetic variations. Which factor could be responsible for this microevolution?

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The original population of brown spotted deer declined drastically after their forest habitat was flooded. After frantic efforts over three decades by the forest authorities to revive the dwindling population, it did bounce back. Now the deer population is as huge as it was three decades ago, but it shows a decreased amount of genetic variations. Which factor could be responsible for this microevolution?
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The original population of brown spotted deer declined drastically after their forest habitat was flooded. After frantic efforts over three decades by the forest authorities to revive the dwindling population, it did bounce back. Now the deer population is as huge as it was three decades ago, but it shows a decreased amount of genetic variations. Which factor could be responsible for this microevolution? a. Bottleneck effect b. Natural selection c. Founder effect d. Gene flow

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Posted in Biology

How does meiosis ensure genetic diverlty

Two ways: 
1. In prophase I of meiosis the homologous chromosomes synapse and crossing over occurs. This switches sections of two of the sister chromatids so the outer two chromatids have the same mix of alleles as the parents and the inner two chromatids have new combinations of alleles. 
2. Meiosis puts only one of each kind of chromosome in the gametes, selecting one of each homologous pair at random. Then when each gamete joins with the gamete from the other parent, there are practically infinite combinations of the alleles possible.

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Study the following food chain : grass>rabbits>snakes>hawks.From this chain, you can correctly assume that each population. A) is a species of a herbivore . B) always larger than the one before it . C) Is a carnivore. D) supports the next tropical level.

The answer is D, for when one tropic level is eaten by the tropic level above it, the tropic level is supporting the higher one. I. E. Rabbits are supported by the grass because rabbits eat the grass. Also, the grass population would be larger than rabbits, the rabbits larger than snakes, so on and so forth, so B is ruled out. B states that each population is larger than the one BEFORE it, but there is no way there would be more rabbits than grass. Also, there are both herbivores and carnivores in the food chain, so A and C are out. The best answer is D.

Posted in Biology

The burrowing owl is found in dry, open areas such as grasslands, prairies, savannas, deserts, farmlands, golf courses, and other urban areas throughout most of western United States and Florida, Central America, and most of South America. It makes its home in burrows of other animals and primarily eats insects and small rodents. As humans build more cities, nearby burrowing owl habitats change due to destruction of burrows and loss of prey. Which is the least likely outcome of the habitat changes that are described? The niche of the burrowing owl may change as it adapts to the changes. The niche of the burrowing owl may change as it moves to a new habitat. The population of the burrowing owl may be reduced or even become extinct. The population of the burrowing owl may increase in its new surroundings.

Answer:

The correct answer would be “The population of the burrowing owl may increase in its new surroundings”.

Habitat destruction is one of the major causes of extinction of many species.

The living species either move to a new habitat or get extinct due to the scarcity of resources.

In new habitats or niches, they face lot challenges like competition from already existing species, new resources due to which their survival rates reduce to a great extent.

They may evolve to adapt to new habitats, resources, and niches.

Thus, there are least chances that the population of burrowing owl may increase in its new surroundings.

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Which theory best explains the present arrangement of continents, oceans, and landforms on Earth? the Pangaea theory Wegener’s continental theory The continental puzzle theory plate tectonic theory


Plate tectonic theory

Plate tectonics is the theory that describes the global distribution of geological phenomena of Earth such as the arrangement of regions, seas, and landforms. Generally, it applies to the action and interaction of the earth’s lithosphere. This comprises the composition, movement, interference, and destruction of plates and the resulting geological phenomena such as seismicity, volcanism, continental drift, and elevation or ranges building.

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Posted in Biology

What two factors does carrying capacity compare?

Answer:

Factors that carrying capacity compare

a) Availability of food & water

b) Sufficient availability of living space and environmental condition

c) Population size

Explanation:

Carrying capacity is defined as the maximum population that a given ecosystem can carry without creating any burden on the ecosystem itself and its components.

Basically the factors that a carrying capacity compare are –

a) Availability of food & water

b) Sufficient availability of living space and environmental condition

c) Population size

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Psychology

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Law

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Nursing

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Sociology

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