Answer:
For food
Explanation:
Dolphins are aquatic animals while Man are terrestrial beings. Man controls almost all the regions of the earth and get food from both land and water.
The Dolphins gets its food to stay alive by feeding on other small aquatic animals such as fish, shrimp, etc . These foods are also well sought by man which brings a certain type of competition for these sea foods between Man and Dolphins.
I think the answer is "Fast cooling of minerals on the surface"
D . Tt is heterozygous genotype written
