Phosphate pollution is caused by

Options

A. phosphate rocks
B. agricultural fertilizers
C. sewage and automoblies
D. sewage and agricultural fertilizers

Answer

### Step-by-Step Solution

1. **Understanding Phosphate Pollution**: Phosphate pollution refers to the contamination of water bodies with phosphates, which can lead to environmental issues such as algal blooms.

2. **Identifying Sources of Phosphate Pollution**: The main sources of phosphate pollution include:
- **Agricultural Fertilizers**: These are commonly used in farming to enhance crop growth. They often contain high levels of phosphates, which can run off into nearby water bodies during rain or irrigation.
- **Untreated Sewage**: Wastewater that has not been treated can contain phosphates from human waste, detergents, and other household products.

3. **Analyzing the Options**: The question provides several options regarding the causes of phosphate pollution:
- Phosphate rocks
- Agricultural fertilizers
- CVs (which likely refers to cars or vehicles) and automobiles
- CVs and agricultural fertilizers

4. **Eliminating Incorrect Options**:
- **Phosphate Rocks**: While they are a source of phosphates, they are not a direct cause of pollution in water bodies.
- **CVs and Automobiles**: These contribute to pollution primarily through emissions and do not directly cause phosphate pollution.
- **Agricultural Fertilizers**: This is a significant contributor to phosphate pollution.
- **CVs and Agricultural Fertilizers**: This option includes CVs, which are not a direct cause of phosphate pollution.

5. **Conclusion**: The correct answer is that phosphate pollution is primarily caused by **agricultural fertilizers** and **untreated sewage**. Therefore, the most relevant option is **CVs and agricultural fertilizers**, as it acknowledges the role of fertilizers in phosphate pollution.

### Final Answer
Phosphate pollution is caused by **agricultural fertilizers and untreated sewage**.

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