Q. What health problems can be caused by smog?

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Q. Where the insolation is greatest?

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Q. Which power is the fastest source of electricity in the world?

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Q. The solar energy reaching the earth surface is known as

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Q. 97% of the atmosphere mass is within

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Q. What has a high Albedo?

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Q. The percentage of carbon dioxide is tiny but its importance is

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Q. 50% of heat is absorbed by the

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Q. Without carbon dioxide the earth would be

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Q. The longer journey through the atmosphere means

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Q. Within countries, atmospheric pollution is most serious in

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Q. What are the direct effects of high level of ozone in the atmosphere?

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Q. The numer and variety of living organism in the world is known as

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Q. What percentage world's species live in tropical rain forest?

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Q. Biodiversity contains different types of

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Q. What are the other effects of high level of ozone in the atmosphere?

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Q. In 2000, how many people do not have access to clean water and sanitation?

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Q. Air pollution is an

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Q. In developing countries, less than 25% people don't have access to

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Q. What is the most characteristic features of tropical rain fosrest?

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