Chain Crosswords Long Nature Medium — Set 3

Medium 13×13 Set 3
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2
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9
Across
  1. 2. Type of bond between ions
  2. 4. Fiber that transmits signals
  3. 6. Biological classification rank
  4. 8. A word related to science
  5. 9. Part of body with a function
Down
  1. 1. Push or pull on an object
  2. 3. Simple machine for lifting
  3. 5. A word related to science
  4. 7. A word related to science