Across
- 3. ship Darwin sailed on
- 5. an inherited trait or physical characteristic an organism get over time
- 8. father of evolution
- 9. when members of the population differ from one another in many of their traits
- 10. process by which individuals that are better adapted to their environment are more likely to survive
Down
- 1. when a species produces too much offspring
- 2. the struggle among living things
- 4. differing in size, shape, and or color
- 6. when oxygen levels get low and fish die off
- 7. man who classified life on structure