Forest fires are a result of which type of combustion and why? Comment.

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Combustion:**
- Forest fires are primarily a result of **spontaneous combustion**. This is a type of combustion that occurs without any external heat source.

2. **Define Spontaneous Combustion:**
- Spontaneous combustion is a combustion reaction that occurs on its own, without the need for an external heat source. It happens when the conditions are right for a material to ignite.

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