How do layers of rocks explain the history of Earth?

Question: How do layers of rocks explain the history of Earth?

Rocks tell us about the history of Earth. Location of fossils in rock layers explain the Earth's past .Scientists use a technique called radiocarbon dating to find out the age of the fossils . Igneous rocks tell of past volcanic episodes on earth .Sedimentary rocks tell us about past environments at Earth surface . Sedimentary rocks usually contain the most fossils from past ages .

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