The process by which a population becomes better adapted to its biological and social environment is

it is called an accent mark

ur answer is e & d

explanation:

50% lit on the left side

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.