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Across
- 2. Fourth state of matter
- 4. Mixture producing intense heat
- 7. Force attracting objects to Earth
- 9. Center of an atom or cell
- 10. Positively charged particle
Down
- 1. Smallest discrete unit of energy
- 3. Wearing away of land by water or wind
- 4. A word related to science
- 5. Diffusion of water through a membrane
- 6. One body blocking another in space
- 8. Large molecule essential for life