What is 'r' used to study? ( r= Intrinsic rate of natural increase )

Impacts of abiotic factors on population growth. Impacts of biotic factors on population growth. Both 1 and 2 Increase in number of total percent cover of an individual.

Both 1 and 2

'r' also called the intrinsic rate of natural increase is used to study impacts of any abiotic/ biotic factors on population growth.