Sedimentary rock over millions of years under Heat and pressure will form layers .
What is sedimentary rock?
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.
How are sedimentary rocks formed ?
Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface.
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