The animal population becomes too large for its feeding source or its habitat, its members starve die but humans escape this disaster by
Immigration only
Emigration only
Transportation of food
Both emigration and transportation of food
In India, human population is heavily weighed towards the younger age groups as a result of
What percentage of the world population lives in India
In the population of world, how many persons are added per year
“In the absence of environmental resistance the population grows in geometrical ratio when the food is given in arithmetical ratio''. This is