Across
- 3. any substance that has mass
- 6. inactive state of some animals during winter months
- 7. seasonal movement of animals from one place to another and back
- 9. process of moving nutrients and wastes in a living thing
- 13. studying or working in only one part of a subject
- 15. the ability to do work or cause change
- 18. plants gain their energy from this source
- 19. the study of animals
- 20. any living thing
- 21. any change causes a response
- 22. the study of how living things interact with their environment
Down
- 1. the way in which living things respond to stimuli
- 2. the study of plants
- 4. the study of viruses and very small living things
- 5. the process of breaking down food
- 8. the process of taking in food
- 10. reaction to a change
- 11. (two words) all plants need this gas in order to survive
- 12. all animals need this gas in order to survive
- 14. process of getting rid of waste
- 16. basic unit of all life
- 17. chemical substance that is needed to carry out life processes