Across
- 4. Islands visited by Darwin
- 7. Well supported, tested explanation
- 8. Change that occurs over time
Down
- 1. Scientist that proposed theory of 'Natural Selection'
- 2. Characteristic that helps an organism survive
- 3. Preserved remains of long dead organisms mostly found in the ground
- 5. The variation between living things
- 6. Types of bird with varying beak shape due to isolation