How many persons are added to the Indian population per year?

$Statement \; 1$: Zero population growth should be achieved as early as possible to control human population.
$Statement \; 2$: This requires not two children per couple but a little more effort on reduction of this number.

There is a continuous increase in the world's population growth rate. This is due to:

The best solution to the population problem in India is to

The study of human population statistically is known as

What is the main cause of population explosion in India?