Heat pollution affects mainly

Options

A. Vegetation
B. Aquatic creature
C. Rocks
D. Air

Answer

### Step-by-Step Solution:

1. **Understanding Heat Pollution**:
- Heat pollution, also known as thermal pollution, refers to the degradation of water quality due to changes in temperature. This typically occurs when industries, power plants, and automobiles discharge hot water or other heated substances into nearby water bodies.

2. **Sources of Heat Pollution**:
- Major contributors to heat pollution include:
- Power plants
- Industrial facilities
- Automobiles
- Coal mining operations
- These sources release heated water and chemicals directly into rivers, lakes, oceans, and streams.

3. **Impact on Aquatic Life**:
- The sudden increase in water temperature can cause thermal shock to aquatic species. This can lead to:
- Difficulty in reproduction
- Decrease in dissolved oxygen levels, which is vital for aquatic life
- Increased mortality rates among fish and other aquatic organisms due to stress and disease

4. **Consequences of Heat Pollution**:
- The primary effect of heat pollution is the death of aquatic creatures. Other consequences include:
- Reduced biodiversity
- Altered ecosystems
- Increased vulnerability of species to diseases

5. **Conclusion**:
- Based on the effects discussed, heat pollution mainly affects aquatic creatures. Therefore, the answer to the question is that heat pollution affects mainly **aquatic creatures**.