Migration is usually a response to changes in temperature, food supply, or the amount of daylight, and is often undertaken for the purpose of breeding. Mammals, insects, fish, and birds all migrate.

Migration is the movement of people away from their usual place of residence to a new place of residence, either across an international border or within a State.

The meaning of MIGRATION is the act, process, or an instance of migrating. How to use migration in a sentence.

MIGRATION definition: 1. the process of animals travelling to a different place, usually when the season changes: 2. the…. Learn more.

Dec 30, 2025 · Human migration, the permanent change of residence by an individual or group. It can be within a country or international in nature. It can also be voluntary or forced. Intermediate between …

Migration, the displacement of any organ, whether normal or pathological, as, for example, the descent of the testicle and the dislocation of the kidney, spleen, or ovary.

Jun 18, 2019 · Understand why migration means different things for individuals, countries, and economies in a globalized world. The movement of people away from their place of usual …

Aug 19, 2025 · Migration involves the large-scale movement of organisms from one geographic region to another. This natural behavior is observed across various species, from microscopic plankton to …

Sep 13, 2024 · Migration refers to the movement of people from one geographical location to another, often across administrative or political boundaries, with the intention of settling temporarily or …

In the past three decades 500 million people have moved from the countryside into towns, the biggest such migration in human history.