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KATRIN_1 [288]
3 years ago
14

What is the function of heart valves?

Biology
2 answers:
tatyana61 [14]3 years ago
6 0

Answer:

C.

Explanation:

yuradex [85]3 years ago
3 0
The valves prevent the backward flow of blood.
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In an experiment, a scientist makes a radioactively labeled probe using viral DNA. She then discovers that the probe hybridizes
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