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skad [1K]
4 years ago
8

In an observational study researchers try not to

Biology
1 answer:
o-na [289]4 years ago
5 0

Answer:

D

Explanation:

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Your friend always refers to meat as protein. you try to correct her by stating that:
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Which is essential for finding the biomass of spinach?
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Oxygen and pyruvate.

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