DDT causes

Options

A. Air pollution
B. Water pollution
C. Soil pollution
D. All

Answer

### Step-by-Step Solution:

1. **Understanding DDT**:
- DDT stands for dichloro-diphenyl-trichloroethane. It is a synthetic pesticide that was widely used for agricultural purposes.

2. **Usage of DDT**:
- DDT is primarily used as an insecticide to control pests in crops. However, its use has been banned in many countries due to its harmful effects.

3. **Environmental Impact**:
- DDT has several detrimental effects on the environment:
- **Soil Pollution**: When DDT is applied to crops, it can leach into the soil, leading to soil contamination and decreased soil fertility.
- **Air Pollution**: DDT can volatilize into the air, contributing to air pollution.
- **Water Pollution**: DDT can seep into water bodies through runoff from contaminated soil, affecting aquatic ecosystems and potentially entering drinking water supplies.

4. **Effects on Ozone Layer**:
- DDT contributes to ozone depletion, which is harmful to the environment and human health.

5. **Conclusion**:
- Given the various ways DDT causes pollution, the correct answer to the question "DDT causes" is "All of this" (air pollution, water pollution, and soil pollution).

### Final Answer:
DDT causes air pollution, water pollution, and soil pollution. Therefore, the correct option is "All of this."

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