Population is the ratio of births to deaths.
THE PEOPLE IS NOT AWARE OF OUR POPULATION
Reproduction
hey
Increase.
Gene mutation causes the phenotype frequency in a population to change after each generation.
the enviroment.
population increase
Sex.
dirt
the factor that causes a population to stop increassing is called depopulation
death of an animal could lead to reduction in population
well, on my own idea, as what i have been observed, pre-marital sex, rape, and poverty are the main causes of population explosion.