I think it is d because the other places are of course wet lands.
Answer:a compound present in the body as a neurotransmitter and a precursor of other substances including epinephrine
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Answer:
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
Explanation:
Answer:
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