Biology

Question

Why did Darwin’s observations of Galápagos tortoises cause him to wonder how species originate?

1 Answer

  • While at the Galapagos islands, he noticed that animals on the different islands differed. For example, the giant tortoises on one island had saddle-shaped shells, while those on another island had dome-shaped shells. People who lived on the islands could even tell the island a turtle came from by its shell. This started Darwin thinking about the origin of the species. He wondered how each island came to have its own type of tortoise. 
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