Which type of population is more efficient in all types of work?

Which type of population becomes more efficient in all work?

The least densely populated state of India is

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 $, \%$)?

The number of organisms in a population is added by:

Pertaining to human population,if there is a decrease in competition,it would be the result of: