Which of the following is not the consequence of global warming?

Options

A. Increase in average temperature of Earth.
B. Melting of Himalayan glaciers
C. Rise in sea level
D. Eutrophication

Answer

To determine which of the following options is not a consequence of global warming, we can analyze each option provided:

1. **Increase in average temperature of Earth**:
- Global warming is primarily characterized by an increase in the Earth's average temperature due to the accumulation of greenhouse gases in the atmosphere. This is a direct consequence of global warming.

2. **Melting of Himalayan glaciers**:
- The rise in global temperatures leads to the melting of glaciers worldwide, including the Himalayan glaciers. This is also a consequence of global warming.

3. **Rise in sea level**:
- As glaciers and ice caps melt, the water from these sources contributes to rising sea levels. This phenomenon is a direct result of global warming.

4. **Eutrophication**:
- Eutrophication refers to the excessive growth of algae and aquatic plants in water bodies due to nutrient pollution, primarily from fertilizers and sewage. While it can be influenced by various environmental factors, it is not a direct consequence of global warming.

Based on this analysis, the option that is **not** a consequence of global warming is **eutrophication**.

### Final Answer:
Eutrophication is not a consequence of global warming.