Over a Span of Two Decades,scientists Measured Changes in the Beak

question 21

Multiple Choice

Over a span of two decades,scientists measured changes in the beak size of a population of Galápagos ground finches.This ________.

• A)provided evidence of natural selection in action
• B)is an example of artificial selection
• C)is an example of overproduction
• D)led Darwin to his theory of evolution through natural selection

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