Why is sea water not suitable for drinking? How is it made potable?

Explanation

### Step-by-Step Solution

1. **Understanding Seawater Composition**:
- Seawater is primarily composed of water, but it also contains a high concentration of dissolved salts, mainly sodium chloride (table salt), along with other minerals and impurities. This high salt content makes seawater unsuitable for drinking.

2. **Reasons for Unsuitability**:
- The high concentration of salt in seawater can lead to dehydration if consumed, as the body requires freshwater to function properly. Drinking seawater can actually draw water out of the body's cells, leading to increased thirst and dehydration.

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