Energy stored in fossil fuels is released by burning

Explanation

**Step-by-Step Solution:**

1. **Understanding Fossil Fuels**: Fossil fuels are natural resources formed from the remains of ancient plants and animals that have decomposed over millions of years. They include coal, petroleum (oil), and natural gas.

2. **Energy Storage**: These fossil fuels store energy in the form of chemical energy. This energy is a result of the photosynthesis process that occurred in ancient plants, which converted solar energy into chemical energy.

3. **Process of Burning**: When fossil fuels are burned, a chemical reaction occurs. This process is known as combustion. During combustion, the chemical energy stored in fossil fuels is released in the form of heat and light energy.

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