Across
- 2. the smallest planet of the solar system
- 7. the species come from a common ancestor
- 9. the galaxy we are in
- 10. the animal produce something uncosciously
Down
- 1. they have a rocky sruface
- 3. the biggest planet of the solar system
- 4. believed in natural selection
- 5. any change in the heritable traits within a population across generations
- 6. the star of the solar system
- 8. believed in lineal evolution