Water and ice and i dont know the rest
Answer: Amino acids combine to make proteins.
Explanation:
1) <span>a substance that causes or accelerates a chemical reaction without itself being affected
2) </span>any of various proteins originating from living cells and capable of producing certain chemical changes in organic substances by <span>digestion
3)</span>the part of an enzyme that interacts with the substrate during<span>catalysis</span><span>
4) </span>the substance acted upon by an <span>enzyme
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