Name three substances used to extinguish fire.

Explanation

To answer the question, "Name three substances used to extinguish fire," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the First Substance: Water**
- Water is commonly used to extinguish fires. When water is thrown on fire, it cools down the combustible materials below their ignition temperature, preventing them from burning. Additionally, water vapor produced from boiling water surrounds the fire, cutting off the oxygen supply.

2. **Identify the Second Substance: Sand**
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