Accumulation of national resources and saving is known as
Society betterment
National saving
National production
$(a)$ and $(c)$ both
Scientificstudy of human population is called
The aggregate of process that determine the size and composition of any population is called
Per year growth in India's population according to $1991$ census is
“In the absence of environmental resistance the population grows in geometrical ratio when the food is given in arithmetical ratio''. This is
Which of the following methods is used during abortion?