In the United States, there are over 230 amphibians, over 280 reptiles and approximately 800 species of fish. Each of these categories has species represented on the US Endangered Species List.
Employees in the civil services work under one of the independent agencies or one of the 15 executive departments. In addition to departments, there are a number of staff organizations grouped into the Executive Office of the President.
Difference Between FBI and U.S. Marshal. The FBI, or Federal Bureau of Investigation, is under the U.S. Department of Justice. The FBI serves as an internal intelligence agency as well as a federal criminal investigating agency.