Q. FAO' overestimated that, deforestation of tropical rainforests is about

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Q. Hectopascal (hPa) Unit of atmospheric pressure is equal to

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Q. What causes global warming?

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Q. Human beings are at centre of concerns for:

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Q. Rio Declaration on Environment and Development was agreed by:

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Q. Costs of anthropogenic climate change fall into

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Q. An excessive amount of carbon dioxide acts like a blanket over surface of:

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Q. An increase in global temperature will lead to

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Q. Carbon dioxide is an efficient conductor of

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Q. According to recent data, as surface temperature increases, it would also give rise to

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Q. Due to climate change, sub-arctic, may become more

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Q. Mount Pinatubo, injected about twenty million tonnes of sulphur dioxide into the

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Q. Large amount of sulpher dioxide, transformed into

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Q. What is largest feature of an oceanic plateau?

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Q. Which chemical is a 'ozone' depleting solvent?

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Q. 'HCFCs' can be used in refrigerants instead of

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Q. Feron 'II' served as a

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Q. Molecules of 'CFCs' are dissociated by ultraviolet radiations in the

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Q. 'Bromine' free radical are more destructive than

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Q. In 1992, representatives from nearly 180 nations, met in

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