GRADE 7 - SCIENCE

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Across
  1. 3. - a special cell that sends messages to the brain
  2. 5. - bone in the middle of our chest
  3. 6. - a material used to seal bottles of wine
  4. 8. - the part of a plant that absorbs water
  5. 9. - the biggest animal
  6. 10. - a plant cell part that contains cell sap
  7. 11. - the name of our planet
  8. 13. - a jelly-like part of a cell where chemical reactions happen
  9. 16. - bone that protecs the brain
  10. 17. - the brain of a cell
  11. 19. - bone used for chewing
  12. 20. - the biggest type of cat
Down
  1. 1. - substance in the air that humans need to survive
  2. 2. - biggest and strongest bone in the body
  3. 4. - an instrument used to observe small objects
  4. 5. - the backbone
  5. 7. - the fastest animal
  6. 12. - the second level of organization
  7. 13. - the first level of organization
  8. 14. - a part of a cell where respiration happens
  9. 15. - the part of a plant that gets sunlight
  10. 18. - a female animal that provides milk for humans