B) Geothermal energy
It is heat within the earth
Answer:
A process of change in a population through genetic variation over time.
Age cohort is the group of people born during the same time. Due to their similar time of birth, they pass the course of life together. Therefore, the correct answer to your question is A. Example of the age cohort is the students of particular class, who are of same age group ad have similar expressions and concerns.
Well, they could be scavengers or it could be bacteria and fungi.
