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Across
- 1. A thread-like structure in cells that carries genetic information
- 4. When light bounces off a surface like a mirror
- 5. The smallest piece of matter that makes up everything
- 6. A mountain with an opening that can erupt hot lava
- 8. When a solid mixes into a liquid and seems to disappear
Down
- 2. A sample of something used for study
- 3. A substance made of two or more elements bonded together
- 7. A curved piece of glass that bends light