Cyclic/front rainfall generally occurs

Options

A. all over the world
B. tropical areas
C. temperate areas
D. boundary of warm tropical air and cold polar air.

Answer

**Step-by-Step Solution:**

1. **Understanding Frontal Rainfall:**
- Frontal or cyclonic rainfall occurs at the boundary where two different air masses meet. This boundary is known as a "front."

2. **Identifying the Air Masses:**
- The two air masses involved are cold polar air and warm tropical air. These air masses do not mix but instead create a distinct boundary.

3. **Formation of Clouds:**
- When these air masses collide, the warm air rises over the cold air. As the warm air rises, it cools and condenses, forming clouds.

4. **Types of Frontal Rainfall:**
- There are two types of fronts:
- **Warm Front:** When warm air replaces cold air, leading to less intense rainfall over a larger area.
- **Cold Front:** When cold air replaces warm air, resulting in more intense rainfall but over a smaller area.

5. **Conclusion:**
- Therefore, cyclic or frontal rainfall generally occurs at the boundary of warm tropical air and cold polar air.

**Final Answer:**
Cyclic/front rainfall generally occurs at the boundary of warm tropical air and cold polar air.

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