Answer:
21
Explanation:
Amino acids are the basic structural units of proteins. Our bodies contain 21 amino acids it uses to make all proteins, although books recognize only 20 amino acids. The 20 amino acids are the alphabet of proteins.
During respiration, the energy within the bonds of glucose molecule is released in small amounts in a step-by-step enzyme-controlled reaction.
The farmer should either use a less harmful but just as effective fertilizer so people will stop getting sick from the water.
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The rock is about to expierence its forst volcano eruption