Q. What is colorless, odorless, tasteless and cannot be felt ?

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Q. What is categorized as a trace gas in earth's atmosphere ?

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Q. According to biological view, ultimate fate of all species is

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Q. What factor makes a man dominant species in biosphere?

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Q. Life on earth begins, approximately

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Q. Natural hazard causes damage to

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Q. Earthquake and volcanoes are which hazards?

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Q. The period of dry weather which lasts longer than normally expected is known has

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Q. In cold regions human life depends on

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Q. What are temporary surpluses of water which cover usually dry areas?

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Q. Tropical storms which forms in the Indian ocean is known as

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Q. What are the main climate hazards?

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Q. Cyclones are tropical storms bringing very strong winds and

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Q. Mosquitoes in a standing water increase the risk of

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Q. Between June and October the river Ganges in Bangladesh is swollen by

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Q. Typhoon is formed in the

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Q. Which cyclones are responsible for immediate loss of life and great amount of damage?

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Q. Which areas is the most drought affected part of the world?

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Q. Hurricane is formed in the

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Q. How much is the wind speed in the center of cyclone?

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