In a specific area,the Negros,Aryans,Smartians,and Mongolians are living. They constitute:

Which characteristic is responsible for an increase in population?

If birth rate is $100,$ death rate is $10,$ and the number of individuals in the population group is $1000,$ then what will be the percentage of natural growth rate (in $, \%$)?

In any population group,if the rate of natality and immigration increases,then the density of the population is . . . . . . .

At one time,the number of cheetahs in a habitat is $80$. Their birth rate is $4$ and death rate is $2$. Among them,$6$ cheetahs are internal migrants (immigration) and $3$ cheetahs are migratory (emigration). Calculate the population density of cheetahs in that habitat.

Which of the following countries has the highest population density?