Across
- 4. means variety
- 7. when two animals from different sub-species mate
- 8. inheritable characteristics in a population
- 11. the activity of killing wild animals
- 12. the stronger of two species will be more likely to survive
- 13. when animals mate too much within their own group
- 15. abnormal condition that negatively affects the structure or function
- 16. an animal that preys on others
Down
- 1. a group of living organisms of the same individuals
- 2. very few animals of a species
- 3. variety of life in an area
- 5. something that once lived but now completely disappeared
- 6. volcanic eruption,dramatic change in climate,tsunami,etc
- 9. a biological community of interacting organisms and their physical environment
- 10. risk of becoming extinct
- 14. means life