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record one of Darwin's 4 main points then add a text representing that point

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One of Darwin's four main points: Individuals in a population show variation in their traits.

Text representing that point:
On a windswept island, a single species of finch included birds with long, narrow beaks, others with short, stout beaks, and still others with curved beaks. When a drought left only small seeds, the stout‑beaked birds cracked them easily and fared better, while after a rainy season produced lots of insects the long‑beaked and curved‑beaked birds did well. The presence of many different beak shapes in the same population is a simple example of the natural variation Darwin described.