Correct percentage of two green house gases is

Options

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

Answer

To solve the question regarding the correct percentage of two greenhouse gases, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Greenhouse Gases**: Begin by identifying what greenhouse gases are. They are gases that trap heat in the Earth's atmosphere, contributing to the greenhouse effect.

2. **List Common Greenhouse Gases**: The common greenhouse gases include:
- Carbon Dioxide (CO2)
- Methane (CH4)
- Nitrous Oxide (N2O)
- Chlorofluorocarbons (CFCs)

3. **Know Their Percentages**: Based on the information provided, the approximate percentages of these gases in the atmosphere are:
- CFCs: 14%
- CO2: 60%
- CH4: 20%
- N2O: 6%

4. **Analyze the Options**: Review the options given in the question to find which two greenhouse gases have the correct percentages based on the information above.

5. **Evaluate Each Option**:
- **Option 1**: N2O is 6% and CO2 is 86% - CO2 is not 86%, so this option is incorrect.
- **Option 2**: CH4 is 20% and N2 is 18% - N2 is not a greenhouse gas in this context, so this option is incorrect.
- **Option 3**: CO2 is 40% - This is incorrect as CO2 is 60%.
- **Option 4**: CFC is 14% and CH4 is 20% - Both values are correct.

6. **Conclusion**: The correct percentages of the two greenhouse gases are CFC at 14% and CH4 at 20%.

### Final Answer:
The correct percentage of two greenhouse gases is:
- CFC: 14%
- CH4: 20%

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