[Reveal] Spoiler:
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the woolly mammoth‘s extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters.
author's contention: hunting by humans contributed to the woolly mammoth‘s extinction
Perkins conclusion: the author's contention is surely wrong i.e., humans are not responsible for mammoth's extinction.
Perkins
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