Question

What is pesticides and fertilization

Answer 1

pesticide are used to kill pests
fertilization is the process of fusion of reproductive cells

Answer 2

pesticides are the chemicals which are used to spray on the crops to kill the pests(pests are some organism specifically attack and damage the crops. Example like including rats, locusts, weevils.)

fertilization -when the gametes, i.e. sperm and ovum unite to form a single cell called zygote, this process is called fertilization.