Question

Write two factors that determine the size of a population.

Answer 1

Population size:

1. Population size is the total number of individuals present in a population.
2. The factor that determines the size of the population is:

1. Mortality rate or death rate: the number of death in a given period in a population.
2. For example, the mortality rate decreases the size of the population as people die.
3. Natality rate or birth rate: the number of births in a given period in a population.
4. For example, the natality rate increase the size of the population as individuals are added.