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2
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11
Across
- 4. Focused beam of coherent light
- 9. Protective gas layer in atmosphere
- 10. A word related to science
- 11. A word related to science
Down
- 1. Molten rock beneath the surface
- 2. Fiber that transmits signals
- 3. Biological classification rank
- 5. Tiny reproductive unit of fungi
- 6. Elementary particle in protons
- 7. Relating to the sun
- 8. Simple machine for lifting