In a mass extinction, many species become extinct at the same time. scientists have concluded that a mass extinction killed the dinosaurs and other species, in part as a result of an asteroid striking the planet. what pattern in the fossil record supports this conclusion?

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04-04-2022
Biology

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In a mass extinction, many species become extinct at the same time. scientists have concluded that a mass extinction killed the dinosaurs and other species, in part as a result of an asteroid striking the planet. what pattern in the fossil record supports this conclusion?

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Mickymike92idn Mickymike92idn · Answer 1 · 2022-06-06T14:44:24-04:00

The pattern in the fossil record which supports the idea of a mass extinction event is the sharp decrease in biodiversity in rock layers.

What is a mass extinction event?

A mass extinction event is one which in which a large number of species of organisms die off due to natural or artificial causes.

A mass extinction events is concluded to have killed the dinosaurs and other species, in part as a result of an asteroid striking the planet.

The evidence for this in fossils records is that the lower, older rock layers contains a great diversity of fossil life forms, while the younger layer immediately above is contains few organisms in comparison.

Therefore, the sharp decrease in biodiversity in rock layers provides evidence for a mass extinction event.

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What is a mass extinction event?

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