the Department of the Interior
/ðə dɪˌpɑːtmənt əv ði ɪnˈtɪəriə(r)/
/ðə dɪˌpɑːrtmənt əv ði ɪnˈtɪriər/
(abbreviation the DOI)
- the US government department responsible for protecting the country’s environment. The DOI's many divisions include the National Park Service, the Bureau of Land Management, the Fish and Wildlife Service and the Geological Survey. It is also in charge of government programmes for Native Americans.
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the Department of the Interior