List a few natural resources.

Explanation

### Step-by-Step Text Solution:

1. **Definition of Natural Resources**:
- Natural resources are materials or substances that occur in nature and are not created or significantly altered by human actions. They exist independently in the environment.

2. **Examples of Natural Resources**:
- To provide a clearer understanding, we can list some common natural resources:
- **Air**: The mixture of gases that we breathe, essential for life.
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