1. Ecosystem

2. the natural environment of an organism Habitat

3. Everything that surrounds and affects an animal, including living and nonliving things Environment

4. All the populations that live in the same area  community

5. how everything in an environment can exist together. Ecological system

6. The actions or reactions based on external or internal conditions. Behavior

7. A behavior that an animal begins life with instinct

8. instinct you are born with Inherited Behavior

9. actions you learn from experiences Learned behavior

10. the struggle to stay alive survival

11. the ability of a species to survive in a particular environment brought on by changes within that environment. adaptation

12. a change or difference in characteristics based on environmental influences. variation

13. to copy or create something new reproduce

14. have a benefit over another advantage

15. to gain something good benefit

16. the ability for an organism to live because an it is better adapted than another. Survival advantage

17. something in the environment that doesn’t belong that is harmful pollution

18. overflow of something, such as water. Flooding

19. a condition that is abnormal or harmful disease

20. to keep safe from danger or harm preserve

21. to avoid wasting or endangering something conserve