Across
- 1. A change in the environment that causes a response
- 3. Process by which living organisms increase in size
- 4. Process by which organisms produce new organisms of their own kind
- 6. Condition in which the internal environment is kept constant
- 7. Substances that an organism needs for energy and growth
- 9. Breakdown of complex food materials into a simpler form that an organism can use
- 10. The control and coordination of activities
- 12. The reaction to a change in the environment
- 14. Process by which substances enter and leave and organism and become distributed within it
- 15. Process of combining simple substances to form more complex substances
- 16. A living thing
Down
- 2. All the chemical reactions occurring within an organism
- 5. Process of releasing chemical energy
- 8. The removal of undigested food
- 11. The removal of wastes from the body of an organism
- 13. Taking in of food from the environment