Q. How much of earth's surface area is covered by deserts?

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Q. In Colorado, United States storage of water is four times:

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Q. Arid and semi-arid areas with reduced rainfall leads to:

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Q. Ditches are very wasteful of:

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Q. Irrigation is applied to about one-sixth of world's:

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Q. Degradation can be exacerbated by:

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Q. Decrease vegetation, reduction of available water, crop yields and erosion of soil causes:

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Q. Precipitation, rises in monsoon regions of south-east Asia in

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Q. Monsoon regions of southeast Asia, causing floods and

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Q. Irrigation accounts for about two thirds of world

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Q. Irrigation usually occurs through

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Q. Extensive deforestation can lead to large changes in

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Q. Almost, 60 percent water lost through evaporation and

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Q. In which country average precipitation is reduced to less than 1mm per day?

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Q. Desertification' in drylands is degradation of

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Q. Desert covers about 40%t of total land area of How much area does a desert cover?

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Q. Areas with low precipitation is known as:

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Q. How much agricultural land irrigated in California?

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Q. Amount of runoff is highly sensitive to changes in

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Q. Microirrigation techniques provides a large opportunity for'

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