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Are you ready for an Earth science trivia test? Earth is one of the most interesting planets in our solar system for many reasons, including the fact that...see moreit supports life. Did you know that nitrogen gas fills about seventy-eight percent of Earth's atmosphere, but oxygen is most abundant in rocks in the Earth's crust? The quiz below will not only test you about solid Earth, its waters, and the air that envelops it. see less
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