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Ans: Water Reserves: Most of the population of the world is settled around water reserves. For example, the largest and most densely populated city of Pakistan, Karachi is located along the coast of the Arabian Sea. In Punjab and Sindh, cities with more population are settled near rivers, whereas shortage of water in areas distant … Read more
Ans: Rain as a natural source of water: Rain is a natural source of water. Water from rainfall on mountains and melting glaciers gathers in rivulets and keeps them flowing throughout the year. Arid areas and their production is more dependent on rain than canal irrigated areas. Tarbela and Mangla are important irrigational dams in … Read more
Related Questions: ENVIRONMENTAL CHEMISTRY-AIR The Environmental Chemistry 2: Water List the impurities present in rainwater. List toxic substances present in household wastes. In what ways do industrial wastes pollute water? What is water pollution? List some waterborne diseases. What are pathogenic microorganisms? What is hard water? Why is it sometimes undesirable? List two ways in … Read more