5/30/2023 0 Comments The 6th extinction book![]() ![]() The brown tree snake is an exotic species that has caused many extinctions on Pacific islands such as Guam. It also makes all the other causes of extinction worse. Human overpopulation, which is crowding out other species.This causes widespread harm to organisms. Pollution, which adds chemicals, heat, and noise to the environment beyond its capacity to absorb them.This is raising Earth’s air and ocean temperatures. ![]() ![]() Global climate change, largely due to the burning of fossil fuels.This threatens their survival and the survival of species that depend on them. Over-harvesting of fish, trees, and other organisms.Often, they can out-compete native species because they lack local predators. They may carry disease, prey on native species, and disrupt food webs. Exotic species introduced by humans into new habitats.Other causes of extinction today include: In the U.S., for example, more than 99 percent of tall-grass prairies have been lost. Agriculture, forestry, mining, and urbanization have disturbed or destroyed more than half of Earth’s land area. The single biggest cause of extinction today is habitat loss. ![]()
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