They built dams which enabled them to control the flow of water and conserve water for future cases where a drought comes. So far it has been useful even though dams can be controversial because of natural habitats of animals that usually get affected.
Genetic variation is a prerequisite for evolution because natural selection relies upon lessening the frequency of alleles in a population therefore there must be variance in the gene pool
Answer:
QUESTION NUMBER THREE DONEE YA BOIIIIIIIIII
Explanation:
<span>The central nervous system (CNS) and peripheral nervous system (PNS) work together in a multitude of ways. The (PNS) is ultimately the extension of the (CNS)</span>