Question

Which one of the following criteria is necessary for natural selection to occur? A. Individuals have the same adaptations. B. Individuals show no variation in fitness levels. C. A struggle for existence is apparent. D. Enough resources exist for individuals to survive and thrive

Answer 1

Im taking the test right now and from my point of view I believe its C. A struggle for existence is apparent

Answer 2

heyyyy, the answer is The answer is D:  A struggle for existence is apparent. During the struggle for existence natural selection favors the fittest individuals that can survive and thrive in the struggle, is fittest and is able not only to survive but propagate/reproduce thereby passing the fittest genes to offspring. Hope this helps.