i. Name the oldest relief division of India ?
ii. How does the division differ from the Northern mountains in composition and period of formation ?
Name :
i. The two types of cyclonic system that affects the Indian subcontinent.
ii. The seasons when they are active.
i. Explain why forests are called an index of prosperity of a nation.
ii. Mention the important objectives of urban forestry.
i. Name the type of irrigation that is responsible for water logging ?
ii. What is water logging ?
iii. What are the effects of this phenomenon ?
i. Canal irrigation.
ii. Due to excessive watering in the fields the groundwater level risks to the surfaces and the area becomes swampy - is known as water logging.
iii. In the area of water logging the capillary action brings alkaline salt to the surface making it, saline and unfit for cultivation.
i. How does sprinkler irrigation help in the best utilization of water ?
ii. Name two crops that use this form of irrigation.