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

Options

A. `N_(2)O and CO_(2)`
B. `CFCs and N_(2)O`
C. Methane and `CO_(2)`
D. methane and CFCs.

Answer

To solve the question regarding the greenhouse gases contributing to global warming, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for two greenhouse gases, one contributing 14% and the other contributing 6% to global warming.

2. **Identify Greenhouse Gases**: We need to recall the contributions of various greenhouse gases to global warming. Common greenhouse gases include:
- Carbon Dioxide (CO2)
- Methane (CH4)
- Nitrous Oxide (N2O)
- Chlorofluorocarbons (CFCs)

3. **Recall Contribution Percentages**:
- CFCs contribute approximately 14% to global warming.
- CO2 is the major contributor, accounting for about 60%.
- Methane (CH4) contributes around 20%.
- Nitrous Oxide (N2O) contributes about 6%.

4. **Match Contributions**: From the contributions:
- The gas contributing 14% is CFC.
- The gas contributing 6% is N2O.

5. **Select the Correct Option**: Based on the contributions identified:
- The correct identification of the gases contributing 14% and 6% to global warming is CFC and N2O, respectively.

### Final Answer:
The greenhouse gases identified are **CFC and N2O**.

---