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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Q. What percent of population in developing countries has an access to clean water?

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Q. Every year how many people die from water disease?

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Q. What are the other effects of reducing the water vapors returned to the atmosphere?

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Q. What are the causes of reducing water vapor returned to the atmosphere?

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Q. What percentage of people in developed countries has an access to piped supplies of clean water?

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Q. What are the direct effects of reducing the water vapors returned to the atmosphere?

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