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06-06-2019
Biology

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What is thought to have caused the mass extinction at the end of the Cretaceous Period?

Respuesta :

annamatherne257 annamatherne257

06-06-2019

Answer:

the impact of a massive comet or asteroid 10 to 15 km (6 to 9 mi) wide, 66 million years ago

Explanation:

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