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Scientists are able to understand Earth's interior by studying seismic waves<span>. These are waves of energy that travel through Earth, and they move similarly to other types of waves, like sound waves, light waves, and water waves.</span>
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Answer:
that would be yellowstone national park
Explanation:
B is the best answer.
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Answer:
They prefer to use children in their businesses because they do not need to be paid, they can do unlimited work without getting any money. They cannot decline the work that is given to them.