Q. Pinatubo' volcano erupted in

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Q. What are the useful ways of increasing food outs from the land?

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

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

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Q. In which climate Shelter needs tends to be greater?

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

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

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

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Q. In which climate water needs tends to be greater?

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

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Q. What are the important ingredients in fertilizers?

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Q. Which basic human needs are controlled by climate?

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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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