Regulating pollutant discharges into the waters of the United States
It's either the ophthalmic, maxillary, or the mandibular.
Answer:
Fertilization-the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote.
Explanation:
This means that the answer is The fusion to two cells to form one single cell known as the zygote