Apaleontologist is trying to study the dna of a fossil from an extinct animal called x. he has formulated three hypotheses. which hypothesis cannot be tested?
a. x's dna has a high proportion of protein.
b. the protein content of x's dna changes with its life cycle.
c. x's dna consists of a single strand.
Answers: 3
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Many body systems work together for proper functioning of the body and to maintain internal homeostasis. the works to break down food eaten before exercising. the takes in the nutrients obtained from the food. the body sweats as a mechanism to cool off, because the is working to flush out toxins.
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