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What is the difference between background extinction and mass extinction what is the difference between background extinction and mass extinction

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dthomasspates
Background extinction refers to the normal extinction rate. These are species that go extinct simply because not all life can be sustained on Earth and some species simply cannot survive. Mass extinction is a widespread event that wipes out the majority (over 50%) of living plants and animals.
luisvaschetto

Background extinction refers to the slow extinction of species, while mass extinction involves the extinction of 75% or even more species in geologically short periods of time.

  • Mass extinction events represent geologically short periods of time caused by catastrophic events (e.g., meteorite collisions, volcano eruptions, etc).

  • Background extinction is due to different environmental factors (e.g., climate change, disease, predation, loss of habitat, etc).

  • Background extinction may then be caused by the gradual and progressive effect of natural selection operating on populations and species.

In conclusion, background extinction refers to the slow extinction of species, while mass extinction involves the extinction of 75% or even more species in geologically short periods of time.

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