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Select the best analysis to complete this sentence: Prehistory includes the time prior to the use of writing, because __________. A.without writing, there is no accurate record of history, only artifacts B.without writing, the early people lived a much simpler life C.without writing, historians must associate uses of artifacts with current similar objects D.without writing, history is lost to the ages and historians are really only guessing



Select the best analysis to complete this sentence: Prehistory includes the time prior to the use of writing, because __________. A.without writing, there is no accurate record of history, only artifacts B.without writing, the early people lived a much simpler life C.without writing, historians must associate uses of artifacts with current similar objects D.without writing, history is lost to the ages and historians are really only guessing

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In the carbon cycle, decomposition is the breakdown of a substance into simpler substances. What is the name for the process of the nitrogen cycle that produces ammonia?



In the carbon cycle, decomposition is the breakdown of a substance into simpler substances. What is the name for the process of the nitrogen cycle that produces ammonia?

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Which evidence supports the endosymbiotic theory? Select all that apply. Mitochondria and chloroplasts have a separate, simpler DNA from the nucleus DNA of a eukaryotic cell. These organelles’ DNA resembles the DNA of prokaryotic cells. Mitochondria and chloroplasts self-replicate by a cell division process similar to binary fission, which is the way prokaryotes divide. The way mitochondria and chloroplasts synthesize proteins within the eukaryote cell is more similar to prokaryotes than to eukaryotes. There are living examples of prokaryotes, like cyanobacteria, that share similar features with both mitochondria and chloroplasts of eukaryotic cells. Observations of prokaryotic cells engulfing other prokaryotic cells and the engulfed cells becoming the organelles have been recorded.


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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The process by which complex molecules are broken down into simpler ones for the body's use is called



The process by which complex molecules are broken down into simpler ones for the body’s use is called