The green house effect is caused by

Options

A. `CO_(2)`
B. `NO_(2)`
C. NO
D. CO

Answer

**Step-by-Step Solution:**

1. **Understanding the Greenhouse Effect**: The greenhouse effect refers to the process by which 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 and supporting life.

2. **Identifying Greenhouse Gases**: The primary greenhouse gases include Carbon Dioxide (CO2), Methane (CH4), Nitrous Oxide (N2O), Ozone (O3), and Water Vapor (H2O). These gases have the ability to absorb infrared radiation emitted from the Earth's surface.

3. **Analyzing the Options**: The question provides four options: CO2, NO2, NO, and C. We need to determine which of these is a significant greenhouse gas.

4. **Evaluating Each Option**:
- **CO2 (Carbon Dioxide)**: This is a major greenhouse gas that significantly contributes to the greenhouse effect.
- **NO2 (Nitrogen Dioxide)**: While it can have some greenhouse effects, it is not a primary contributor.
- **NO (Nitric Oxide)**: This gas has a minimal role in the greenhouse effect.
- **C (Carbon)**: This is not a gas; it refers to solid carbon and does not contribute to the greenhouse effect.

5. **Conclusion**: Based on the analysis, the gas that primarily causes the greenhouse effect among the options given is **CO2 (Carbon Dioxide)**.

**Final Answer**: The greenhouse effect is caused by **CO2 (Carbon Dioxide)**.

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