Charles Darwin, was a naturalist from Britain, who published the book "On the Origin of Species". He sailed around the world on the HMS Beagle and made some important observations about species in the Galapagos Islands.
One example of Darwin's observations are those he made about tortoises in the Galapagos Islands. He noticed that the tortoises on different islands, with different environments had physical differences.
- Galapagos tortoises that live in areas with tall plants have saddle-shaped shells and long necks and legs. This allows them to reach up above their head for food.
- Galapagos tortoises on islands that do not have tall plants have dome-shaped shells and short necks and legs. They would not be able to eat plant leaves above their head.
Go to the Bite Size page on Charles Darwin, and read this page about his work. Then watch the Brightstorm video below, Darwin's Theory of Evolution.