Natural Science CLEP Prep Practice Exam

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Prepare for the CLEP Natural Science Exam with our comprehensive study materials and practice questions. Test your knowledge and ace the exam by mastering key concepts.

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What is the most important factor in natural selection?

Genetic mutations
Survival of the fittest
Natural environment
Competition among species

The correct answer is: Survival of the fittest

Natural selection is the process by which certain traits become more common in a population over time. "Survival of the fittest" refers to the idea that individuals with advantageous traits for their environment are more likely to survive and reproduce, passing those traits on to their offspring. This idea was introduced by Charles Darwin and is a key component of the theory of evolution. While genetic mutations and competition among species may play a role in natural selection, they are not the most important factor. The natural environment also affects the survival of certain traits, but it is not the deciding factor. Ultimately, it is the ability to adapt to one's environment and compete for resources that drives natural selection, making "survival of the fittest" the most important factor.