AP BIOLOGY

Detailed explanation-1: -seasonal migration: moving with each season or in response to labor or climate conditions.

Detailed explanation-2: -For example, salmon start life in rivers and migrate to the sea to feed and grow. After spending up to seven years in the ocean, they migrate back to the rivers they were born in so that they can spawn.

Detailed explanation-3: -Interregional migration-Permanent movement from one region of a country to another.

Detailed explanation-4: -Intraregional migration is the permanent movement within one region of a country. Some examples of intraregional migration are suburbanization, counter-urbanization, and urbanization.

Detailed explanation-5: -Mexico. Throughout much of the 20th century, a great deal of circular migration existed between the United States and Mexico. In general, this movement was seasonal migration spurred by the agricultural sector, and border crossings were frequently undocumented due to the lack of a border patrol.