Answer which of the following best describes the process of evolution by natural selection? a. a rapid change of the traits of a species over time b. a gradual change of the traits of a species over time c. a rapid change of the traits of an organism over time d. a gradual change of the traits of an organism over time

D. A gradual change of the traits of an organism over time.

Explanation:

A natural selection is a phenomena that was proposed by Charles Darwin. In this he proposed the fact that of differential survival and reproduction of living beings who have better phenotypic traits over the others. These traits are passed from the parents to their offsprings. These traits are beneficial for the survival in adverse environments. The development of new traits with respect to the environment occurs gradually with time.

which is not a category of marine organisms