Question

One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as:

• A. $N_{2}O$ and ${\mathrm{CO}}_2$
• B. CFCs and $N_{2}O$
• C. Methane and ${\mathrm{CO}}_2$
• D. Methane and CFCs

Answer 1

The correct option is B CFCs and $N_{2}O$

Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect.
Global warming is occurring due to the greenhouse effect combined with increased greenhouse gas emissions by human activities.
The given below diagram shows the relative contribution of various greenhouse gases to total global warming: