Across
- 4. young organism that develops from a zygote
- 5. A similar group of organisms that can reproduce
- 6. preserved remains of something in the past
- 7. one animal does something to the other
Down
- 1. The best trait survives an enviroment
- 2. An inherited behavior or characteristic
- 3. Animals interacting with each other
- 5. When animals choose the best partner
- 6. How well a species could reproduce