How will you show that air is necessary for combustion ?

Explanation

To show that air is necessary for combustion, we can conduct a simple experiment using a candle and a glass jar. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Gather Materials**:
- You will need a candle, a lighter or matches, and an inverted glass jar (or any clear glass container).

2. **Set Up the Experiment**:
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