What most likely happened in sediment layer 5? A massive volcano erupted, causing global warming and lava flow, which in turn caused mass extinction. More iridium was produced by space objects and dumped

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asked Aug 1, 2020 44.2k views

4 votes

What most likely happened in sediment layer 5?

A massive volcano erupted, causing global warming and lava flow, which in turn caused mass extinction.
More iridium was produced by space objects and dumped by local factories.
A massive dust cloud formed, causing global cooling and a lack of sunshine. This in turn caused a lack of plants and a mass extinction.
Fewer impacts lead to a drop in iridium levels and a mass extinction caused by a lack of sunshine.