While Charles Darwin was in Galapagos, he visited the islands of Floreana, Isabela, San Cristóbal, and Santiago only.
tortoises
Adaption to the environment is how Darwin explained the differences in shell shape. Hood Island tortoises needed to reach up with their necks further for food than the Isabela Island tortoises.
he didnt lol
he didnt lol
he didnt lol
The Galapagos Islands
Darwin learned that there were different shaped backs of the tortoises, some had arc shaped or straight. The other thing the tortoises had is long or short necks. There were varieties of island and on every island there were different tortoises.
charles darwin
Certain species, and how they differed from one island to another; in this case, specifically, finches and tortoises.
Their beaks were adapted to match the foods they ate.
He saw that each tortoise inhabited a different island. The townspeople could tell which island a tortoise came from by the shape of its shell.
In the finches, Charles Darwin observed the different beak shapes according to where they lived in the Galapagos. He later linked their beak shapes to the food they ate. Their beaks were shaped to make it more convenient to get their food. In tortoises, he observed the shapes of their shells. The shell shapes got either progressively curvier or progressively less curvy as you travel up or down the island. And I'm not 100% sure about the theory thing, but I think it's the Theory of Evolution