What are the harmful products formed by burning fossil fuels?

Explanation

To answer the question about the harmful products formed by burning fossil fuels, we can break it down into a step-by-step solution.

### Step-by-Step Solution:

1. **Understanding Fossil Fuels**:
- Fossil fuels are natural substances formed from the remains of ancient plants and animals that have been buried under layers of earth for millions of years. They include coal, oil, and natural gas.

**Hint**: Remember that fossil fuels are derived from ancient organic matter.
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