GED Science Practice Test 18
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Avg score: 87% • Most missed: “Black fur emits more body heat to the colder surroundings than white fur does. W…”

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Arctic foxes have a thick layer of fat and dense, white fur to help protect them from the freezing temperatures of the Arctic habitat where they live. Natural selection is thought to be involved in the evolution of the Arctic fox’s thick coat of fur. 

GED Science Practice Test 18
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3 Questions

1. Black fur emits more body heat to the colder surroundings than white fur does. Which of the following does NOT help explain why the Arctic fox has white fur rather than black fur?
2. How does the Arctic fox’s thick fur coat help to keep the animal warm in the frigid Arctic conditions?
3. Which of the following best explains how natural selection is involved in the evolution of the Arctic fox’s thick fur coat?

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