How do darwin' s finches illustrate adaptive radiation ?

Explanation

**Step-by-Step Solution:**

1. **Introduction to Darwin's Finches:**
- Darwin's finches are a group of bird species found primarily on the Galapagos Islands. They are known for their diverse beak shapes and sizes, which are adaptations to different feeding strategies.

2. **Original Stock of Finches:**
- The original stock of these finches was primarily seed-eating birds. This means that they had a common ancestor that was adapted to eating seeds.

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