anafernandez anafernandez

10-10-2017
Biology

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Index fossils are the remains of species that were once abundant and

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nathanlovesterr nathanlovesterr

10-10-2017

Index fossils are used to be able to see that a certain layer of soil was from some time ago. Hope this helps comrade.

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sequoiabearfoot sequoiabearfoot

11-10-2017

Geographically Widespread

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