Why do you think there is a basic difference between the kinds of fertilization most common in aquatic and terrestrial animals?

Ans.

Fertilization involves fusion of sperm (male gamete) and egg cell (female gamete) to form zygote.

In aquatic animals, external fertilization takes place, during which both eggs and sperms are released into the water and their fusion takes place. The aquatic environment protects the eggs and sperms from drying out.

As their is no way or carrier to transfer sperms and eggs in Terri's trial environment, in those animals, fertilization is internal, in which sperms are inserted to the female body, where they fuse with egg cell.

Thus, the basis difference between marine and terrestrial organism is that marine organisms show external fertilization, while land animals show internal fertilizer.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.