Carbon dioxide and oxygen are important resources in ecosystems and are

Before they can pass from a parent cell to its offspring cells, the inherited instructions that a human cell carries must first be

Eye color, hair color, and skin color often vary from person to person and even within a family. One explanation is that

Organic compounds are used as building blocks for

Scientists have developed the ability to manufacture hormones, such as human growth hormone, using bacteria. One benefit of this new technology is that

Although all of the cells of a plant contain the same genetic material, root cells and leaf cells are not identical because they

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During cellular respiration, what is the direct source of the energy used in the cells of consumers in the ecosystem represented below?

Which dissolved substance do aquatic animals remove from their external environment for use in cellular respiration?

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Which statement best explains the differences in fur color between these two cats?

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Which letter indicates the specific structure where most hereditary mutations occur?

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