With regard to enzymes, key is to lock as
a) substrate is to activation energy
b) product is to substrate.
c) enzyme is to active site.
d) substrate is to active site.

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.

meiosis is the correct answer