"The contemporary rate of extinction is estimated at 100 to 1,000 times higher than the natural background extinction rate—the typical rate of species loss thro

"The contemporary rate of extinction is estimated at 100 to 1,000 times higher than the natural background extinction rate—the typical rate of species loss through natural evolutionary processes." https://en.wikipedia.org/wiki/Holocene_extinction#Extinction_rate https://en.wikipedia.org/wiki/Holocene_extinction#Extinction...