Important Questions on The Regional Environment What are the benefits of constructing a dam on the river? Write any two benefits. How dams are useful for society? Mention any two problems addressed by the construction of large dams. What are the various sources of irrigation? Explain in detail. Why is irrigation system necessary in India? Name the type of irrigation system used where the canal system is insufficient. What is irrigation? Why do we irrigate crops? Does water harvesting provide water for domestic uses? (No/Yes) How do the poor monsoons cause crop failure? Explain various types of irrigation systems in India. How can efficiency of applied water be increased in agriculture. It is important to make small check dams across the flooded gullies because they What is known as irrigation? How can rainwater harvesting be used to increase groundwater levels? What are check-dams? What is their purpose? What is the drawback of intensive irrigation? Define irrigation. Why is irrigation of crops essential? Mention the harmful effects of excessive irrigation. What is irrigation? Discuss the various methods of irrigation. Give any one advantage of irrigation. , Cotyledons are also called- 
