Which is the main function of carbohydrates in the body?​

Which of the following explains why a tree is often used as a model to represent the principle of common descent

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.

Procedure in pregnancy to have access to fetus. what do you call this procedure?