Water pollution is a phenomenon in which unwanted substances enter into a water body and thus into the water cycle. Which of the following is a consequence of water pollution?

Options

A. Eutrophication
B. Greenhouse effect
C. Increase in aquatic life forms
D. Increase in the oxygen content of water

Answer

**Step-by-Step Solution:**

1. **Understanding Water Pollution**: Water pollution occurs when harmful substances, such as chemicals, waste, and toxins, enter water bodies, disrupting the natural water cycle. This can lead to various environmental and health issues.

2. **Identifying Consequences of Water Pollution**: The question asks for the consequences of water pollution. We need to evaluate the options provided: eutrophication, greenhouse effect, increase in aquatic life forms, and increase in the oxygen content of water.

3. **Analyzing Each Option**:
- **Eutrophication**: This is a process where water bodies receive excess nutrients (often from fertilizers), leading to algal blooms. These blooms can deplete oxygen in the water, harming aquatic life. This is a direct consequence of water pollution.
- **Greenhouse Effect**: This primarily relates to air pollution and is not a direct consequence of water pollution.
- **Increase in Aquatic Life Forms**: Water pollution typically harms aquatic ecosystems, leading to a decrease in aquatic life rather than an increase.
- **Increase in Oxygen Content of Water**: Water pollution generally decreases the oxygen levels in water due to processes like eutrophication, making this option incorrect.

4. **Conclusion**: The correct consequence of water pollution from the options provided is **Eutrophication**.

**Final Answer**: Eutrophication is a consequence of water pollution.

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