Describe one example of adaptive radiation.

Explanation

**Step-by-Step Solution:**

1. **Understanding Adaptive Radiation**:
- Adaptive radiation is a process in evolution where organisms diversify rapidly from an ancestral species into a wide variety of forms to adapt to different environments. It involves both adaptation and geographical separation.

2. **Definition**:
- According to the NCRT books, adaptive radiation is defined as the evolution of different species in a given geographical area starting from a common ancestor and radiating out to occupy different habitats.

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