Answer:
The answer is B, I believe, because it states here that, "Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. ... The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site. There are two theories explaining the enzyme-substrate interaction."
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Answer:
The organisms homeostasis
Water pressure and temperature varies at different depths of the ocean.
I am pretty sure it is <span>D. Microbiologist</span>