Algal bloom are formed in those water bodies which are

Options

A. Rich in nutrients
B. Poor in nutrients
C. Poor in oxygen
D. Rich in oxygen

Answer

### Step-by-Step Solution:

1. **Understanding Algal Blooms**: Algal blooms are rapid increases in the population of algae in water bodies. They can have significant effects on aquatic ecosystems.

2. **Nutrient Enrichment**: Algal blooms are primarily caused by the enrichment of water with nutrients, particularly nitrogen and phosphorus. When these nutrients are abundant, they promote the growth of algae.

3. **Eutrophication Process**: The phenomenon of nutrient enrichment leading to algal blooms is known as eutrophication. This process can lead to various ecological issues, including decreased oxygen levels in the water.

4. **Conditions for Algal Blooms**: Algal blooms typically occur in water bodies that are rich in nutrients. In contrast, they do not form in water that is poor in nutrients or in environments with low oxygen levels.

5. **Conclusion**: Based on the understanding of nutrient enrichment and its effects, we conclude that algal blooms are formed in water bodies that are rich in nutrients.

### Final Answer:
Algal blooms are formed in water bodies that are **rich in nutrients**.

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