Distinguish between surface water (fresh water) and underground water with respect to composition.

Explanation

### Step-by-Step Solution

1. **Definition of Surface Water and Underground Water**:
- **Surface Water**: This is the water that is found on the surface of the Earth, such as in rivers, lakes, and ponds. It is directly exposed to the atmosphere and is influenced by environmental factors.
- **Underground Water**: This refers to water that is located beneath the Earth's surface, typically found in the spaces between rocks and soil layers. It is often accessed through wells and springs.

2. **Composition of Surface Water**:
- Surface water contains a variety of dissolved gases and minerals.
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