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Across
- 4. One body blocking another in space
- 6. A word related to science
- 8. Wearing away of land by water or wind
- 9. A word related to science
- 10. Center of an atom or cell
Down
- 1. Naturally occurring inorganic solid
- 2. Group of similar living organisms
- 3. Mixture producing intense heat
- 5. Substance providing immunity
- 6. A word related to science
- 7. Preserved remains of ancient life