Increase in atmospheric temperature due to `CO_(2)` , is called

Options

A. Pasteur effect
B. Greenhouse effect
C. Blackman effect
D. Emerson effect

Answer

To solve the question regarding the increase in atmospheric temperature due to CO2, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the term that describes the increase in atmospheric temperature specifically due to carbon dioxide (CO2).

2. **Analyze the Options**: The options provided are:
- Pasteur effect
- Greenhouse effect
- Blackman effect
- Emerson effect

3. **Define Each Term**:
- **Pasteur Effect**: This effect refers to the inhibition of fermentation of glucose when there is an increased concentration of oxygen. It is not related to atmospheric temperature or CO2.
- **Greenhouse Effect**: This is the phenomenon where certain gases in the Earth's atmosphere, such as carbon dioxide, trap heat from the sun, leading to an increase in the Earth's temperature. This is directly related to the question.
- **Blackman Effect**: This refers to the law of limiting factors in photosynthesis, which states that the rate of photosynthesis is affected by the intensity of light, but it does not relate to atmospheric temperature.
- **Emerson Effect**: This term is related to the enhancement of photosynthesis at certain light wavelengths and is not relevant to atmospheric temperature.

4. **Identify the Correct Answer**: Based on the definitions, the term that best describes the increase in atmospheric temperature due to CO2 is the **Greenhouse Effect**.

5. **Conclusion**: Therefore, the correct answer to the question is the **Greenhouse Effect**.

### Final Answer:
The increase in atmospheric temperature due to CO2 is called the **Greenhouse Effect**.

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