What is migration? Which are the two types of migration?

What is migration? Which are the two types of migration? Describe the trends of migration in India.

Migration:
Migration is the tempo rihy or permanent relocation of population inside or outside the boundaries of a country or state.
Types of Migration:
The two types of migration are internal (within the country from one area to another) and international (between countries).
Internal migration does not change the size of the population, but influences the distribution of population within the nation.
Trends of Migration in India:
The trends of temporary migration in India are of the herders, who take their flocks to different pastures during the summer and winter.
These herders live mosdy in the hilly and desert areas. Permanent migration occurs from the rural areas to the urban areas in search of employment opportunities as there is great poverty and unemployment in rural areas of India.