Across
- 3. The scientist who came up with the theory of natural selection
- 4. Humans affected the evolution of these animals during the industrial revolution
- 6. The scientist who believed acquired traits could be passed down
- 7. structures in animals that no longer serve a purpose
- 9. Our closest living relative in the animal kingdom
Down
- 1. The organism that is a transitional species between dinosaurs and birds
- 2. how animal's change over time to adapt to their environment
- 5. A trait that helps an organism survive in their environment
- 8. The set of islands Darwin explored to aid in his theory of evolution