81. Global warming may result in
82. Oxygen which is vital for life is a product of photosynthesis and comes from
83. Which one of the following is a greenhouse gas ?
84. Acid rain is caused by the pollution of environment by
85. The ‘Green House effect’ is produced due to the presence of excess amount of
86. Which gas does not form the part of atmosphere ?
87. Which one of the following statement is correct ?
Ozone is found in the earth's atmosphere mostly between
Ozone is found in the earth's atmosphere mostly between
88. Which one of the following is not a ‘green house gas’ ?
89. Green house effect is accelerated by
90. Smoke is formed due to
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