NEET BIOLOGY

Detailed explanation-1: -Migration includes immigration and emigration. People coming into your country from another country for the purpose of taking up residence is called immigration and the people are called immigrants. The process in which a person leaves his own country in order to settle permanently in another is called emigration.

Detailed explanation-2: -Emigrate means to leave one’s country to live in another. Immigrate is to come into another country to live permanently.

Detailed explanation-3: -internal migration: moving within a state, country, or continent. external migration: moving to a different state, country, or continent.

Detailed explanation-4: -human migration, the permanent change of residence by an individual or group; it excludes such movements as nomadism, migrant labour, commuting, and tourism, all of which are transitory in nature.

Detailed explanation-5: -In U.S. immigration, there are four main categories of immigration status, including U.S. citizens, permanent or conditional residents, non-immigrants, and undocumented immigrants.