What are the possible causes of the past 5 mass extinctions

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.

Explanation:

there ya go ^^

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.