Chain Crosswords Short Nature Hard — Set 10

Hard 15×15 Set 10
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Across
  1. 2. Substance providing immunity
  2. 6. Force attracting objects to Earth
  3. 8. One body blocking another in space
  4. 9. Diffusion of water through a membrane
  5. 10. A word related to science
Down
  1. 1. Biological catalyst for reactions
  2. 3. A word related to science
  3. 4. Wearing away of land by water or wind
  4. 5. Pure substance on periodic table
  5. 7. Slow-moving river of ice