Q. Overgrazing is very common in drier areas of the

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Q. Lifespan of CFCs in atmosphere is:

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Q. 'Photovoltaic' cell convert solar radiation into:

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Q. Gaia hypothesis was developed by:

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Q. Non renewable energy includes:

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Q. In stratosphere temperature increases with:

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Q. Global warming potential of carbon dioxide is:

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Q. In thermohaline, circulation in ocean current are driven by:

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Q. Particulate matters, which are smaller than 10 micrometer can be inhaled :

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Q. Ratio of increased greenhouse effect of any gas campared with carbondioxide is known as:

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Q. Semi conductor silicon Boron solar chips, having

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Q. Cropping of wood by judicious pruning is known as:

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Q. What is used as a radioactive tracer?

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Q. Hydrogen atoms, having same number of protrons, but a different number of neutrons, known as:

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Q. Melting of ice and snow increases amount of water in the:

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Q. Earth's atmosphere is primary composed of nitrogen and

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Q. Chloroflouorocarbon (CFCs) atmospheric lifetime is about:

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Q. When People are being forced to leave their homes, resulting migration is known as:

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Q. In transpiration process, water transfers from plants to:

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Q. 'Deforestation' also causes:

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