Q. What is the percentage of irrigated land in Iran affected by salinization?

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Q. What is the source of heating in cold climates?

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Q. Which top five countries uses desalination for the water production?

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Q. The water is strived of oxygen by decomposition of dead algae is known as

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Q. In 1950, world's fresh water availability per person was

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Q. What is the percentage of irrigated land in Sudan affected by salinization?

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Q. What are the types of unmanaged waste in rural areas?

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Q. In 2000, world's fresh water availability was

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Q. Name the worlds driest place?

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Q. In which process the sea water is changed into fresh water

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Q. United nations estimated that one third of the world's pollution lives in medium or high

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Q. The countries which most likely suffers from water shortage is known as

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Q. The river Nile crosses how many countries to reach Egypt?

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Q. In which process, more energy is required to change sea water into fresh water

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Q. The ancient Greeks has described Egypt as the

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Q. Which countries extremely uses underground water

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Q. Name the region, which uses the process of desalinization

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Q. What is not suitable content for plants to grow in salinization?

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Q. What increases crop yields by putting nutrients in the soil?

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Q. Which country has the large rivers which has captured water from other countries in the wetter climate

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