Evolution is a change in a population genetic make up that occurs
a. over many generations.
b. quickly within a year.
c. over five years.
d. only when new species are created.

A. Over many generations

Explanation:

Evolution is a slow process. Survival of the fittest. It takes many many hundreds of years to change

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

answer: blah

explanation:

bc blah