A chemical harmful released by Chlorofluorocarbon to ozone is
Nitrogen Peroxide
Fluorine
Chlorine
Sulphur dioxide
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Ozone hole is largest over |
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Peeling of Ozone umbrella, which protects us from UV rays, is caused by |
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Fish die in water polluted by sewage due to |
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Ozone layer of upper atmosphere is being destroyed by |
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Noise pollution is measured in |
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Acid rain is caused by increase in the atmospheric concentration of |
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In an area where DDT had been used extensively, the population of birds declined significantly because |
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Biochemical Oxygen Demand (BOD) in a river water |
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Montreal Protocol aims at |
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dB is a standard abbreviation used for the quantitative expression of |
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