What do you mean by human population? Write names of factors affecting it.

$\text{Solution:}$

$?$ Human population the whole number of peple or inhabitant in a country or region.

$\text{Factor affecting the population:}$

$?$ Natality rate is the average number of new individuals produced by a population reproductively active in a unit time. It is also known as birth rate.

$?$ Mortality rate is the number of individuals dying in a unit time ,it is thus also known as death rate.

$?$ Immigration is when individuals from one population migrate to another,this introduces new alleles in the gene pool of a population. Population size increases.

$?$ Emigration is when individuals from one population go out to another place, this leads to loss of certain genes in the gene pool. Population size decreases

$?$ Age distribution is divided into three categories pre-reproductive,reproductive and post reproductive.