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Question

Biology Question on organisms and populations

____and ____ are the two basic processes that contribute to an increase in population density.

A

Natality and Immigrati

B

Mortality and Immigration

C

Mortality and Emigration

D

Natality and Emigration

Answer

Natality and Immigrati

Explanation

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.