B. Long Answer Type Questions
1. Analyse the importance of lakes.
2. Explain the importance of Great Lakes of North America.
3. "Rivers are considered lifeline of human civilization". Explain.
4. State any three features of river Nile.
5. Analyse the importance of river Ganga.
6. Mention any three features of river Amazon.
7. State any four features of river Yangtze.
8. Sate any four major features of river Murrey-Darling.
9. "Rapid industrilisation is a major cause of water pollution." Explain.
10. "Agriculture practices also lead to water pollution." Analyse the statement.
Answers
Answer:
1. Lakes are important for various reasons, like regulating the flow of river water, storage of water during the dry seasons, to maintaining the eco-system, and also the generation of hydroelectric power. The different types of lakes in India are freshwater lakes and salt water lakes.
2. Transportation. The Great Lakes and surrounding area is a natural resource of great importance in North America. The region also serves as the focal point of the industrial and agricultural base of the Midwest's heartland by providing a strong marine transportation system.
3. Rivers are considered as lifeline of human civilization bcz - 1) The bank of a river is fertile which is useful for farming 2) The earliest civilization begun near the rivers. 3) The civilization which began near the rivers was one of the greatest civilization bcz rivers provide them everything
4. The Nile river is filled with narrow cliffs, boulders, and wild rapids (cataracts). It runs through a narrow, green valley of Egypt and then branches out over an area of fertile soil at the Meditteranean Sea (the Nile River Delta). West of the Nile is the Sahara Desert, the largest desert in the world.
5. The Significance of the Ganges River
Aside from providing drinking water and irrigating fields, the Ganges River is extremely important to India's Hindu population for religious reasons as well. The Ganges River is considered their most sacred river, and it is worshiped as the goddess Ganga Ma or "Mother Ganges."
6. The Amazon River twists and turns, curving like a snake through the Amazon Rainforest. That's what gives it its length. Its volume comes from its width and depth. In fact, it's the widest river in the world, known to some as the River Sea.
7. The Yangtze River is the longest river in Asia and the third longest in the world. The meaning of the Yangtze River's Chinese name Changjiang is 'Long River'. It is as long as 6,397 km (3,975 miles), making it the longest river in Asia and the third longest in the world after the Nile and the Amazon.
8. It includes a range of diverse landscapes and complex ecosystems, including over 77,000km of rivers and more than 25,000 wetlands. These landscapes are home to at least 35 endangered species of birds, 16 endangered species of mammals and 46 known species of native fish.
9. Increased use of plastic and other non bio degradable materials which are inturn left into the water bodies. →With the use of chemical pesticides and fertilizers , the land is losing its natural characteristics. ... This causes the growth of weeds in the water and affects the aquatic life also.
10. Agricultural activities that cause NPS pollution include poorly located or managed animal feeding operations; overgrazing; plowing too often or at the wrong time; and improper, excessive, or poorly timed application of pesticides, irrigation water, and fertilizer.