CNG is better than diesel because it burns most efficiently in the automobiles and very little of it is left unburnt. It is cheaper and cannot be adulterated .
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36.
What is cultural or accelerated eutrophication ?
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37.List the metals obtained by recycling of e-wastes.
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38.
Name the eye diseases caused due to absorption of high dose of UV-B by the cornea?
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39.
What is the effect of UV-B radiations on plants ?
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40.
What are chlorofluorocarbons and aerosols ? Write the sources and mechanism of the effects of chloroflorocarbons.
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