Which of the following statements is true?
a. gene flow and natural selection always result in evolution.
b. gene flow usually increases the genetic differences between two populations.
c. according to natural selection, organisms with poor adaptations will never reproduce.
d. since genetic drift is random, it does not always favor the "healthier" or "better" organisms.

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✅ D. Since genetic drift is random, it does not always favor the "healthier" or "better" organisms.

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c.more precipitation,but only when emission levels.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."