Define regeneration.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Regeneration**: Regeneration is a biological process that can be defined as a mode of asexual reproduction.

2. **Fragmentation**: In regeneration, if an organism's body is fragmented or divided into two or more pieces, each piece has the potential to develop into a new individual.

3. **Process Explanation**: The process involves the regeneration of lost or damaged body parts. When an organism is fragmented, each fragment can grow into a complete organism, effectively allowing for reproduction without the need for sexual reproduction.

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