Explain the terms sorption and desorption .

Explanation

### Step-by-Step Solution

**Step 1: Define Sorption**
- Sorption is a general term that refers to the process by which one substance becomes attached to another. It encompasses two specific processes: adsorption and absorption.
- **Adsorption** is the process where molecules adhere to the surface of a solid or liquid.
- **Absorption** is when one substance is taken up into the bulk of another substance.

**Step 2: Explain Adsorption**
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