This would be considered a mutation.
Too much socializing can affect work production and accuracy.
The answer is Poliomyelitis. Poliomyelitis or also called as Polio, is a kind of disease involving a virus known as polio-virus that attacks the different parts of the nervous system that results to the paralysis of limbs or different parts of the body.
All three are bad for the environment because all three types release CO2 into the air and have throughout their constant usage helped with creating the greenhouse effect that traps heat and causes global warming. That's why clean energy is a necessity and people are developing harnessing wind and solar power.
C. The presence of predators could cause natural selection because it would mean survival of the fittest.