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20-04-2017
Chemistry

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How can we use rocks to determine how an area used to look in the past?

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Аноним Аноним

20-04-2017

We can use rocks to determine if the animals from to day have changed from the past.
Rocks also help us know if rivers once flowed through an area.
We use them to find out what type of animals live then that are extinct now.

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