question_answer

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

A) Re-radiation of U.V. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\]

B) Re-radiation of I.R. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\]

C) Re-radiation of I.R. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\]

D) Re-radiation of U.V. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\]