USA Environment

USA Environment

U.S. plant life is very diverse; the country has more than 17,000 identified native species of flora. More than 400 mammal, 700 bird, 500 reptile and amphibian, and 90,000 insect species have been documented. The Endangered Species Act of 1973 protects threatened and endangered species and their habitats, which are monitored by the U.S. Fish and Wildlife Service.

The U.S. has fifty-eight national parks and hundreds of other federally managed parks, forests, and wilderness areas. Altogether, the U.S. government regulates 28.8% of the country's total land area. Most such public land comprises protected parks and forestland, though some federal land is leased for oil and gas drilling, mining, or cattle ranching.

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