Across
- 3. center line of the Earth
- 6. changes that help a species
- 9. # and variety of species in an area
- 10. to be able to grow up and mate
- 11. to be chosen
Down
- 1. group of islands
- 2. water falling from the sky
- 4. from the Earth
- 5. studied Gallapagos Islands
- 7. changes over time
- 8. local atmospheric conditions