Greenhouse gases cause

Options

A. Trap UV rays
B. Increase in temperature of atmosphere
C. Prevents global warming
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Greenhouse Gases**:
- Greenhouse gases are gases that trap heat in the atmosphere. They absorb infrared radiation emitted from the Earth's surface and prevent it from escaping back into space.
- Common greenhouse gases include carbon dioxide (CO₂), methane (CH₄), and chlorofluorocarbons (CFCs).

2. **Identifying the Effects of Greenhouse Gases**:
- The primary effect of greenhouse gases is the greenhouse effect, which leads to an increase in the Earth's surface temperature.
- This process is essential for maintaining a habitable climate but can lead to global warming when the concentration of these gases becomes too high.

3. **Analyzing the Options**:
- **Option 1: Trap UV rays** - This is incorrect. Greenhouse gases primarily absorb infrared radiation, not ultraviolet (UV) rays.
- **Option 2: Increase in temperature of atmosphere** - This is correct. Greenhouse gases trap heat, leading to an increase in atmospheric temperature.
- **Option 3: Prevents global warming** - This is incorrect. Greenhouse gases contribute to global warming by trapping heat in the atmosphere.
- **Option 4: All of these** - This is also incorrect since not all statements are true.

4. **Conclusion**:
- The correct answer is that greenhouse gases cause an increase in the temperature of the atmosphere.

### Final Answer:
Greenhouse gases cause an increase in the temperature of the atmosphere.

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