Describe the migration as a component …

(a) Migration is the movement of people across regions and territories.
(b) Migration can be internal (within the country) or international (between the countries).
(c) Migration is a determinant factor of population change, as it changes its size and composition.
(d) Internal migration does not change the size of the population but influences the distribution of population within the nation.
(e) In India, most migrations have been from rural to urban areas because of the 'push' factors in rural areas. These push factors are adverse conditions of poverty and unemployment in the rural areas. The 'pull' factors of the city are in terms of increased employment opportunities and better living conditions.
(f) These 'push' and 'pull' factors have led to increased migration from rural to urban areas and rapid rise in the urban population
(g) There has been a significant increase in the number of 'million plus cities' from 25 to 35 in just one decade i.e., 1991-2001.