The main reason for high growth rate of world population was that with better food supplies and medicine, deaths were reducing, while the number of births still remained fairly high.

The distribution of population in the world is extremely uneven due to various geographical, social, cultural and economic factors.

Population composition refers to the structure of the population.

People are a nation’s greatest resource. Nature’s bounty becomes significant only when people find it useful. It is people with their demands and abilities that turn them into ‘resources’. Hence, people are considered a resource.