Increase in atmospheric `CO_(2)`

Options

A. has adverse effect on vegetation
B. brings no change in atmosphere
C. leads to genetic disorders
D. leads to rise in global temperature

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the effects of an increase in atmospheric carbon dioxide (CO₂). We need to analyze the options provided to identify the correct consequence of increased CO₂ levels.

2. **Identifying Sources of CO₂**: The primary sources of increased CO₂ in the atmosphere include:
- Burning of fossil fuels (oil, gas, coal).
- Deforestation, which reduces the number of plants that can absorb CO₂.

3. **Consequences of Increased CO₂**: The increase in atmospheric CO₂ has several consequences, but the most significant is its impact on climate:
- Increased CO₂ contributes to global warming by trapping heat in the atmosphere.

4. **Global Warming Explained**: Global warming refers to the rise in Earth's average surface temperature due to increased levels of greenhouse gases, including CO₂. This phenomenon leads to:
- Melting of glaciers.
- Changes in weather patterns.
- Adverse effects on ecosystems and biodiversity.

5. **Evaluating the Options**:
- **Option A**: "Has adverse effect on vegetation" - This is partially correct as global warming can indirectly affect vegetation.
- **Option B**: "Brings no change in atmosphere" - This is incorrect; increased CO₂ significantly alters atmospheric conditions.
- **Option C**: "Leads to genetic disorder" - This is incorrect; CO₂ does not cause genetic disorders.
- **Option D**: "Leads to rising global temperature" - This is correct as it directly addresses the primary consequence of increased CO₂.

6. **Conclusion**: The correct answer to the question is **Option D: leads to rising global temperature**.

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