The aggregate of processes that determine the size and composition of any population is called:

The abundance of a species population within its habitat is called

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 $, \%$)?

List the attributes that populations but not individuals possess.

In an $Urn$-shaped age pyramid of the population,the trend of growth is:

If $4$ individuals in a laboratory population of $40$ fruitflies died during a specified time interval (i.e.,a week),the death rate in the population during that period is