Global warming will causes

Options

A. Rise in level of oceans
B. Decreases in glaciers
C. reduction in ice caps
D. all the above

Answer

To answer the question "Global warming will cause," we can follow these steps:

### Step-by-Step Solution:

1. **Define Global Warming**:
Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases like carbon dioxide (CO2).

**Hint**: Understand what global warming is and its main causes.

2. **Identify Effects of Global Warming**:
- **Rise in Sea Levels**: As global temperatures rise, polar ice caps and glaciers melt, contributing to higher sea levels.
- **Decrease in Glaciers**: Increased temperatures lead to the melting of glaciers, which reduces their mass.
- **Reduction in Ice Caps**: The warming climate causes ice caps to shrink, further contributing to sea level rise.

**Hint**: Think about how temperature changes affect ice and water levels.

3. **Evaluate the Options**:
- Option 1: Rise in level of oceans
- Option 2: Decrease in glaciers
- Option 3: Reduction in ice caps
- Option 4: All of the above

**Hint**: Consider whether each option is a direct consequence of global warming.

4. **Conclusion**:
Since all the effects listed in options 1, 2, and 3 are direct consequences of global warming, the correct answer is option 4: **All of the above**.

**Hint**: Look for the option that encompasses all the effects discussed.

### Final Answer:
Global warming will cause **all of the above** (option 4).