Which agency is primarily responsible for protecting endangered species in relation to pesticide registration?

The Environmental Protection Agency (EPA) is the primary agency responsible for the protection of endangered species in relation to pesticide registration. The EPA evaluates the potential impacts of pesticides on both human health and the environment, including the effects on endangered species and their habitats.

As part of the pesticide registration process, the EPA conducts assessments to determine if a pesticide's use could adversely affect endangered species, as mandated by the Endangered Species Act. This includes consulting with the U.S. Fish and Wildlife Service and the National Marine Fisheries Service when necessary to ensure that the application of pesticides does not jeopardize the existence of these species.

The other agencies listed do not have a direct role in the regulation of pesticides concerning endangered species. The Department of Labor and the Occupational Safety and Health Administration focus on workplace safety, while the Federal Bureau of Wildlife, although involved in wildlife conservation, does not have the regulatory authority over pesticide registration like the EPA.