In which part of the atmosphere, ozone is formed and how?

Explanation

**Step-by-Step Solution:**

1. **Identify the Part of the Atmosphere:**
- Ozone is primarily formed in the **stratosphere**, which is the second layer of the Earth's atmosphere, located above the troposphere and below the mesosphere.

2. **Understanding the Formation Process:**
- The formation of ozone occurs through a series of reactions involving oxygen molecules (O2) and ultraviolet (UV) light.

...