Have extinctions occurred in the past? Is there anything unusual about current extinctions?

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Principles of environmental science inquiry and applications

ISBN: 978-1259656415

7th edition

Authors: William P. Cunningham, Mary Ann Cunningham

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Question Posted: Feb 17, 2016 04:36 AM

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Have extinctions occurred in the past? Is there anything unusual about current extinctions?

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In geologic time there have been many extinctions including at least fi...View the full answer

Principles of environmental science inquiry and applications

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