The two gases making highest relative contribution to the greenhouse gases are:

Options

A. `CO_(2)` and `CH_(4)`
B. `CH_(4)` and `NO_(2)`
C. CFCs and `N_(2)O`
D. `CO_(2)` and `N_(2)O`

Answer

A

Explanation

The greenhouse effect is a naturally occurring phenomenon that is responsible for warming earth's surface and atmosphere. `CO_(2)` (60%) and `CH_(4)` (20%) are commonly known as greenhouse gases because they are responsible for the greenhouse effect, that ultimately leads to global warming.