Species change over time.

Lesson Vocabulary: evolution, natural selection, adaptation, speciation


Lesson Review
1. Lamarck believed an individual organism passed traits on to its offspring. He lacked support for his ideas. Darwin showed how traits could be passed on by natural selection.

2. Darwin noticed that beak shapes and sizes differed among the finches. This led him to believe that the finches evolved differently.

3. Isolation stops populations from interbreeding so new species evolve.

4. The third species most likely evolved from one of the two other species. Isolated by mountains, it began to develop its own unique characteristics.

5. White fur, it will help the hare blend in, escaping predators.