The believe that the best answer among the choices provided by the question is A. an underground water source.
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The DNA of any individual possesses genetic traits which vary from individual to individual. Traits can be physical traits or behavioral traits. Example of a physical trait would be the appearance of an individual and behavioral trait refers to the nature of the individual. Both vary from individual to individual.
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The first stage of cellular respiration, called glycolysis, takes place in the cytoplasm. In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP
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