Explain commensalism, with the help of an example.

Explanation

### Step-by-Step Solution:

1. **Definition of Commensalism**:
- Commensalism is a type of symbiotic relationship between two organisms where one organism benefits while the other is neither helped nor harmed.

2. **Characteristics of Commensalism**:
- In this interaction, one organism derives benefits such as food or shelter, while the other organism remains unaffected. This means that the second organism does not gain any advantage, nor does it suffer any disadvantage from the relationship.

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