Why was natural selection an important contribution to the theory of evoulution

The reason that natural selection is important is that it's the central idea, stemming from Charles Darwin and Alfred Russel Wallace, that explains design in nature. It is the one process that is responsible for the evolution of adaptations of organisms to their environment.
Hope this helps!!

$100. 125 x 0.20 = 25125 - 25 = $100

Ijust took the test on edgenuity and the answer is "life would cease to exist". hope this !