Which of the following are correct for the greenhouse effect?
(i) CO2 is mainly responsible for the greenhouse effect.
(ii) The gradual increase in the average temperature of the earth’s atmosphere is
called global warming.
(iii) Methane, nitrous oxide and water vapour are greenhouse gases like CO2.
(iv) An increase in earth’s temperature by as little as 0.5
0C has no effect.
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Answer:
option 3 is correct because all are green house gases
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