How does coal mining affect the environment?

Explanation

### Step-by-Step Solution:

1. **Introduction to Coal Mining**:
- Coal mining is the process of extracting coal from the ground. It is a significant source of energy but has several environmental impacts.

2. **Production of Methane**:
- During the extraction of coal, a considerable amount of methane gas is released. Methane is a potent greenhouse gas that contributes to global warming.

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