Natural selection is a process by which organisms that are better adapted to their environment tend to increase in size. migrate. evolve new traits. survive.

Natural selection is a process by which organisms that are better adapted to their environment tend to evolve new traits. The natural selection is the process of evolution in which the individuals of organisms with a favourable set of traits tend to survive and adapt to the environment, and reproduce to pass these new evolved traits to the progeny. These new traits then become a part of the population.

survive

Explanation:

The organisms that are better adapted would survive and reproduce. They do not have new traits that they didn't have before. I took the quiz. :)

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.