Thread: The Earth stands on the brink of its sixth mass extinction and the fault is ours
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Old 07-09-2015, 11:16 PM
Uthgaard Uthgaard is offline
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Mass extinctions happen on a cyclical basis. As does climate change. Are we influencing it? Yep. Is it inevitable anyway? Yep. You learn about all of the factors and history in basic ecology & geology.