Q. What percent of world's commercial need of energy is covered by water power?

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Q. Why the cost of wind power is dropped by 80% in the last 20 years?

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Q. Layers of semi conductor materials produce a small electric current when heated by sun, in

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Q. Which Gulf is the world's largest producing gulf in the world?

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Q. Using tall turbines driven by the force of wind is known as

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Q. Which zone's deletion can affects the marine ecosystem?

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Q. In which country in the world, the wind energy accounts for its 20% electricity?

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Q. Wind turbines are common sight in which countries?

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Q. In middle east the oil production is 31.9%, while consumption is

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Q. Which ocean fishes are slow growing and takes long time to reach in maturity?

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Q. Which protocol bans the mineral resource activities in the Antarctic, 1991?

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Q. Many of the large oil producing countries were found in which countries?

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Q. From how many countries oil is produced?

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Q. Which treaty guarantees that the Antarctic should be left open for all the nations for the scientific and other peaceful pursuits?

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