Which of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contibute to the total global warming?

Options

A. CFCs 14%, `CH_(4)` 20%
B. `CO_(2) 40` , CFCs 30%
C. `N_(2)O 6% , CO_(2) 86%`
D. `CH_(4) 20%, N_(2)O 18%`

Answer

A

Explanation

The percentage of various greenhouse gases that contribute to total global warming are `CO_(2)` (warming effect 60%), `CH_(4)` (20%), CFCs (14%) and nitrous oxide `N_(2)O` (6%).