Air is not a conductor of electricity. It is an ____

Explanation

**Step-by-Step Solution:**

1. **Understanding Conductors and Insulators:**
- First, we need to understand the difference between conductors and insulators. Conductors are materials that allow electric current to flow through them easily, while insulators are materials that do not allow electric current to flow.

2. **Identifying Air's Properties:**
- Next, we analyze the properties of air. Air is a mixture of gases and does not have free-moving charged particles that can carry electric current.

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