The gases responsible for Green house effect are :

Options

A. `CO_(2)`
B. CFC
C. `N_(2)O`
D. All the above

Answer

To answer the question about the gases responsible for the greenhouse effect, we can follow these steps:

### Step 1: Understand the Greenhouse Effect
The greenhouse effect is a natural process where certain gases in the Earth's atmosphere trap heat, preventing it from escaping back into space. This process is essential for maintaining the Earth's temperature but can lead to global warming when these gases are present in excessive amounts.

### Step 2: Identify the Gases
The main gases responsible for the greenhouse effect include:
- **Carbon Dioxide (CO2)**: Released from burning fossil fuels, deforestation, and various industrial processes.
- **Methane (CH4)**: Emitted during the production and transport of coal, oil, and natural gas, as well as from livestock and other agricultural practices.
- **Nitrous Oxide (N2O)**: Produced from agricultural and industrial activities, as well as during combustion of fossil fuels and solid waste.
- **Chlorofluorocarbons (CFCs)**: Synthetic compounds used in refrigeration, air conditioning, and aerosol propellants, which also contribute to ozone depletion.
- **Water Vapour (H2O)**: The most abundant greenhouse gas, but its concentration is primarily controlled by natural processes.

### Step 3: Evaluate the Options
Given the options:
- Carbon Dioxide
- Chlorofluorocarbons
- Nitrous Oxide
- All of the above

Since all the mentioned gases contribute to the greenhouse effect, the correct answer is **"All of the above."**

### Step 4: Conclusion
The gases responsible for the greenhouse effect include carbon dioxide, chlorofluorocarbons, nitrous oxide, and others. Therefore, the answer to the question is **"All of the above."**

---