Air pollution causes

Options

A. Global warming
B. Respiratory problems
C. Soil erosion
D. None of these

Explanation

### Step-by-Step Solution

1. **Understanding Air Pollution**:
- Air pollution refers to the presence of harmful substances in the air that can cause adverse effects on health and the environment. These substances can be gases, particulates, or biological molecules.

2. **Identifying Sources of Air Pollution**:
- Common sources of air pollution include emissions from factories, vehicles, and the burning of fossil fuels. Domestic activities, such as cooking with wood, also contribute to air pollution.

3. **Effects of Air Pollution**:
- Air pollution has several negative impacts on health, particularly respiratory problems. Breathing in polluted air can lead to conditions such as asthma, bronchitis, and other lung diseases.

4. **Analyzing the Given Options**:
- The question provides four options:
- A) Global warming
- B) Respiratory problems
- C) Soil erosion
- D) None of this
- While air pollution can contribute to global warming, the most direct and immediate effect of air pollution is on human health, specifically respiratory issues.

5. **Conclusion**:
- Based on the analysis, the most accurate answer to the question "Air pollution causes" is **B) Respiratory problems**.