Tortoise Vs Finch Research Paper

There were many species of animals that Darwin discovered on his voyage. Two animals that Darwin studied on the Galapagos Island are the tortoise and the finch. He learned that they all had different features but they were the same species. He called this natural selection. He discovered that the animals could adapt to their environment over time, in order to survive. For example, in his research of tortoises, Darwin found that saddle-back tortoises have shells that rise in the front making it easier for them to lift their heads to eat tree cactus. While dome-shaped tortoises live where vegetation is close to the ground, making it not as important for them to be able to raise their head. He also found that finches had different kinds of beaks.