Across
- 2. Tubes or channels that carry liquids or electricity
- 6. To copy or imitate something
- 7. To stop or prevent something from happening
- 9. Extremely important and necessary for life
- 10. Very important or meaningful
- 11. Encouraging activity or growth by applying energy
- 14. When the body refuses to accept a transplanted organ
- 15. Facts or information that prove something is true
- 17. Made up of many cells working together
Down
- 1. Completely new and innovative; pioneering
- 2. Dead bodies, especially of humans
- 3. Made of only one cell
- 4. The tightening and shortening of muscles, especially in the heart
- 5. A problem that makes something more difficult
- 8. More than two but not very many
- 12. Too small to see without special equipment
- 13. Important ideas or principles
- 16. Not normal or common; rare