New Mexico NM-ASR Science Grade 8 Practice Questions - New Mexico Assessment Of Science Readiness - Science, Grade 8 Exam

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A population of beetles has both green and brown individuals. Birds find green beetles more easily on tree bark and eat more of them. Over many generations, most beetles in the population are brown. Which process is best illustrated?

Natural selection, because brown beetles survived and reproduced more successfully in this environment Artificial selection, because humans chose the brown beetles Mutation, because the beetles changed color instantly Genetic drift caused by humans

Correct Answer:

Natural selection, because brown beetles survived and reproduced more successfully in this environment

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