Most aquatic organisms reproduce by using which type of fertilization method? conjugation. external fertilization . internal fertilization . pollination .

The correct answer is External fertilization.

Explanation:

Sexual reproduction involves the fusion of male and female gamete, a process called fertilization. This can occur either inside the body called internal fertilization or outside the body called external fertilization. Many marine invertebrates release their gametes in water. The sperms swim to reach the eggs. The process of spawning is observed in aquatic organisms where the female release the eggs and sperms are released by the male at the same time. Fertilization occurs externally in the water bodies.

d i think its   answer d

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.