1. Enzymes are proteins that a chemical reaction ​

Catalyst

Explanation:

catalyst is the answer

Explanation:

catalyst

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.