Q. Young Dryas marked by spread of an Arctic flower

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Q. Over last 100 years, average temperature around world has risen about

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Q. Tropical cyclones are also known as: hurricanes and

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Q. Atmosphere is a blanket of

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Q. Ppm' stands for

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Q. Thermosphere is hottest layer of

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Q. Ozone layer was discovered by French physicists, named as

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Q. A source of energy, which can not be depleted by utilizing it known as:

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Q. British meteorologist G. M. B. Dobson, developed a simple spectrophotometer to measure

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Q. Releasing greenhouse gases into atmosphere, casues

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Q. Troposphere is region of lower atmosphere up to a height of about

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Q. UV-B radiations, having a profound impact on human health, such as

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Q. What is purpose of reforestation?

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Q. In 1952, London smog is referred to as

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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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