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Which of the following is a similarity 20 between x-ray waves and sound waves?
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Both transfer energy.

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The surface gravity of Pluto is the weakest of the nine planets because Pluto
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has the smallest mass.

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The tendency of a stationary object to resist being put into motion is known as
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inertia.

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Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
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They have similar anatomies.