Across
- 2. cold-blooded animal with scales or bony plates
- 7. done intentionally on purpose
- 8. not able to be seen through
- 9. subatomic particle with a neutral charge
- 10. scientific study of animals & their behavior
- 13. study of viruses
- 14. negatively charged subatomic particle
Down
- 1. when light changes direction or bends
- 3. small rocky body orbiting the sun
- 4. scientific study of plants
- 5. subatomic particle in nucleus of every atom
- 6. smallest functional unit of an organism
- 7. the mass of a substance per unit volume
- 11. basic unit of a chemical element
- 12. remains of a prehistoric organism