Q. What is main source of employment in developing countries?

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Q. Wheat, rice and soya bean belongs to

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Q. Cotton' has deeper

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Q. Maize, sorghum, sugar-cane, millet and many pasture and forage grasses are:

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Q. In glasshouses additional CO₂ is introduced artificially to increase

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Q. In 1982-3 Elno events, agricultural production dropped by

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Q. One degree Celsius of persistent warming causing bleching to

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Q. "Tropical forests" are like:

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Q. Desert sand reflects up to:

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Q. Evaporation occurs through:

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Q. 30% of world's land is consist of:

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Q. Eighty percent of terrestrial 'carbon' is in:

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Q. Climate is dominant factor in determing distribution of

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Q. Almost, 2% of land area is

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Q. World?s land cultivation area, approximately

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Q. Heat-trapping gases, known as

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Q. Corals are significant source of food for

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Q. Environmental conditions under which a species can exist and reproduce are known as:

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Q. Forests represent a large store of

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Q. Grassland will reflect, about

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