Choose the correct sequence of greenhouse gases with respect their relative contribution to global warming in increasing order.

Options

A. `N_(2)O, CFC, CH_(4), CO_(2)`
B. `CFC, N_(2)O, CO_(2), CFC`
C. `CH_(4), N_(2)O, CO_(2), CFC`
D. `N_(2)O, CO_(2), CH_(4), CFC`

Answer

To solve the question regarding the correct sequence of greenhouse gases in increasing order of their contribution to global warming, we need to analyze the contribution of each gas mentioned.

### Step-by-Step Solution:

1. **Identify the Greenhouse Gases**: The gases mentioned in the question are:
- N2O (Nitrous Oxide)
- CFC (Chlorofluorocarbons)
- CH4 (Methane)
- CO2 (Carbon Dioxide)

2. **Understand Their Contributions**: Based on the information provided:
- CO2 contributes approximately 60% to global warming.
- CH4 contributes around 20% (not specifically mentioned in the transcript, but generally accepted).
- CFC contributes about 14%.
- N2O contributes around 6%.

3. **Arrange in Increasing Order**: To arrange these gases in increasing order of their contribution to global warming:
- N2O (6%)
- CFC (14%)
- CH4 (20%)
- CO2 (60%)

4. **Final Sequence**: Therefore, the correct sequence of greenhouse gases in increasing order of their contribution to global warming is:
- N2O < CFC < CH4 < CO2

### Conclusion:
The correct answer is: **N2O, CFC, CH4, CO2**.