Across
- 2. theory that living things come only from other living things
- 3. regulation of life maintaining conditions inside an organism
- 6. length of time an organism lives
- 7. makes food to be used as energy
- 9. a prediction that can be tested
- 13. the way cells are arranged in the living organism
- 14. changes living things go through as they grow
- 16. smallest unit of life
- 17. is not or never has been alive
- 18. reaction of an organism to a stimulus
Down
- 1. the theory that nonliving things produce living things
- 4. increase in size using materials from the environment
- 5. a characteristic of an organism that makes it better able to survive
- 8. takes in food to be used as energy
- 10. anything that causes a reaction
- 11. living thing that is made of more than one cell and performs life functions
- 12. explains how nature works based on verifiable data and observations
- 15. an explanation of things or events based on many observations