Across
- 4. simplest structural unit of an element or compound
- 5. something that is likely to change
- 7. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
- 11. one of several distinct subdivisions of a text
Down
- 1. a representation of a person's thinking with symbolic marks
- 2. a parallelogram with four right angles
- 3. a small celestial body composed of rock and metal
- 6. the abstract science of number, quantity, and space
- 8. a practical method or art applied to some particular task
- 9. relating to the sun or utilizing the energies of the sun
- 10. evaluation of performance by assigning a score