2.  the natural environment of an organism

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

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

5.  how everything in an environment can exist together.

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

7.  A behavior that an animal begins life with

8.  instinct you are born with

9.  actions you learn from experiences

10.  the struggle to stay alive

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

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

13.  to copy or create something new

14.  have a benefit over another

15.  to gain something good

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

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

18.  overflow of something, such as water.

19.  a condition that is abnormal or harmful

20.  to keep safe from danger or harm

21.  to avoid wasting or endangering something