i. What is meant by variability of rainfall ?
ii. How does this variability affect agriculture ?
Give a reason for each of the following :
i. Delhi has rain in December - January.
ii. Kolkata has a little rain in Apri.
Mention any four aims of the revised Forest Policy of 1988.
i. Checking the extension of sand-dunes in the desert areas of Rajasthan and along the coastal tracts.
ii. Increasing substantially the forest/tree cover in the country through massive afforestation and social forestry programmes, especially on all denuded, degraded and unproductive lands.
iii. Meeting the requirements of fuelwood, fodder, minor forest produce and small timber of the rural and tribal populations.
iv. Increasing the productivity of forests to meet essential national needs.
i. Name two cities in India which have grown rapidly due to in -migration.
ii. What are the two factors that led to the decreasing growth rate of population from 1981 to 2001 ?
The dependency ratio is higher in rural areas than in UIrban areas. Give two reasons to explain why.
Mention two different ways by which modern methods of irrigation are an improvement over the primitive methods.