AP BIOLOGY

Detailed explanation-1: -The growth rate is defined as the difference between the birth rate and the death rate. The population growth rate for India is 0.97%. If the birth rate exceeds the death rate, then the population is increasing. If the birth rate decreases more than the death rate, then the population is decreasing or declines.

Detailed explanation-2: -Natural decrease occurs when death rate is greater than birth rate. This means that more deaths occur in a population than babies are born so population numbers decline.

Detailed explanation-3: -Logic follows then that if the birth rate and death rate are equal, the population is not changing and if the birth rate is less than the death rate, the population would be shrinking (ie. more people are being “taken away” than are being added to the area).

Detailed explanation-4: -The population in India is characterized by high birth rate and low death rate, this means the rate of taking birth is comparatively higher than the rate of dying people. As a consequence, the population generally increases. This is also known as population explosion.