1.

Which of the following is the major cause of global warming?

Answer»

re-radiation of U.V. rayd by `CO_(2) and H_(2)O`
re-radiation of I.R. rays by `CO_(2) and H_(2)O`
re-radiation of I.R. rays by `O_(2) and N_(2)`
re-radiation of U.V. rays by `O_(2) and N_(2)`

Answer :B


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