Answer:
Natural selection is the mechanism which proved species to adapt or not in their environment.
Step-by-step explanation:
Natural selection is the mechanism which proved species to adapt or not in their environment. It supports that species undergo mutations in an alleatory way and that these mutations will help them to adapt or not to their environment. The best adapted species are said to be the fittest.
The best adapted species are those which finally produce largest amount of offspring and these survive enough to make the population grow. The less adapted species will tend to dissapear over time.