Question
Biology Question on organisms and populations
____and ____ are the two basic processes that contribute to an increase in population density.
Natality and Immigrati
Mortality and Immigration
Mortality and Emigration
Natality and Emigration
Natality and Immigrati
Solution
The correct answer is option (A): Natality and Immigrati
Population density is the per-person unit area. There are four factors that determine the population density of an area. They are: Immigration: This is the action of people coming from outside to live in a certain place. Emigration: This is the action of leaving a place and moving to another. Natality: This is the ratio of number of birth to the size of the population. This is also known as the birth rate. Mortality: This is the number of death in a population at a given time. So out of these, in order to increase the population density, natality, and immigration are required.