Across
- 3. ......... of the fittest?
- 4. Flightless bird who has been extinct due to natural selection?
- 6. The largest living species of Tortoise
- 7. When an organism no longer exists?
Down
- 1. To develop gradually to adapt to it's surroundings
- 2. To hide of disguise yourself
- 5. The surname of the man who contibuted to the idea of Evolution?