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Across
- 2. Substance providing immunity
- 4. Positively charged particle
- 6. Force attracting objects to Earth
- 8. A word related to science
- 9. Fourth state of matter
- 10. Slow-moving river of ice
- 11. A word related to science
Down
- 1. One body blocking another in space
- 3. A word related to science
- 5. Device for controlled nuclear reactions
- 7. A word related to science