Q. Which type of cancer is frequently growing in America?

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Q. Spray cans containing chemical substance known as

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Q. Troposphereic' ozone harmful effects on humans, included:

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Q. Which layer of atmosphere contains water vapors, clouds, dusts and pollution?

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Q. Nitrogen and oxygen are used for

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Q. Which energy is used, stored and transferred between the earth and its atmosphere?

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Q. Why carbon dioxide is so important in our atmosphere?

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Q. 21% of heat is reflected by

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Q. Why the sea does not heat up quickly?

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Q. The solar energy absorbed by the surface is transformed into

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Q. The rate of insolation vary from

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Q. What are the example of non renewable energy?

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Q. Most rainforests are present in which countries?

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Q. How much of the world'd forest has been destroyed by the felling, burning and grazing?

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Q. Which continent has the highest forest area in the world?

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Q. What were cleared during industrial revolution to make farms, factories and cities?

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Q. Montreal protocol was signed in

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Q. The greatest impact of the forest destruction was felt in which areas?

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Q. How much of the rainforest disappear per year?

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Q. In which protocol it was pledged to stop using CFCs?

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