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Sedimentary rocks are useful records of past time because of _____.

1.their unique colors
2.the minerals found in them
3.their volcanic origin
4.their layered structure

User Darkman
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2 Answers

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Sedimentary rocks are useful records of past time because of their layered structure. Hope this helps!
User VArDo
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2 votes
4. Their layered structure
User Amr Bahaa
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