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What is the difference between a mass extinction and a regular (background) extinction?(1 point)

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Mass extinction is ongoing and is a regular process that results from evolution.
Mass extinction is ongoing and is a regular process that results from evolution.

Mass extinction can be caused by ecological factors like climate change and loss of habitat.
Mass extinction can be caused by ecological factors like climate change and loss of habitat.

Mass extinction occurs over a long period of time.
Mass extinction occurs over a long period of time.

Mass extinction involves many species over a short period of geologic time.

Mass extinction involves many species over a short period of geologic time, while regular (background) extinction occurs at a slower rate with a lower number of species going extinct over time.