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This is what some scientists think the Earth looked like a very long time ago.
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(PreK-1) |
(Grades 2-4) |
(Grades 5-6) |
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Geologists
are scientists who study changes in the Earth. The Earth is billions
of years old. Geologists read the history of the Earth in rocks the
way we read books.
This is what some scientists think the Earth looked like a very long time ago. |
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