EVERYDAY SCIENCE

Detailed explanation-1: -Immigration is the movement of individuals into a population from other areas. This increases the population size and growth rate. Emigration is the movement of individuals out of a population. This decreases the population size and growth rate.

Detailed explanation-2: -Immigration is the movement of individuals into an area. Emigration is the movement of individuals out of an area.

Detailed explanation-3: -Immigration is the movement of individuals into a population. It increases genetic diversity. Emigration is the movement of individuals out of a population.

Detailed explanation-4: -Strictly speaking, the immigrant population consists of persons residing in a country but born in another country. The definition based on nationality is commonly used in a certain number of countries and reflects a legal view of immigration.

Detailed explanation-5: -Emigration is the movement of individuals out of a population. This can result when resources like food or nesting sites become scarce in an area.