AP BIOLOGY

Detailed explanation-1: -The opposite of natural increase is called natural decrease, where more people are dying than babies being born, which can cause a population to shrink. Areas with aging populations often have natural decrease.

Detailed explanation-2: -a natural population in which all four factors that affect population size (death rate, birthrate, immigration, and emigration) are functioning Although there is variation among species, female ducks lay about 10 eggs per nesting attempt.

Detailed explanation-3: -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-4: -emigration. People moving out of a population can be named as emigration. Its one of the factors that affect the population density.