What comes first thunder or lightning?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Phenomena:**
- Lightning and thunder are both associated with thunderstorms. Lightning is a flash of light produced by the discharge of electricity in the atmosphere, while thunder is the sound produced by the rapid expansion of air heated by the lightning.

2. **Simultaneous Occurrence:**
- Both lightning and thunder occur at the same time during a thunderstorm. However, they are perceived differently due to their distinct properties.

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