Chain Crosswords Short Nature Medium — Set 4

Medium 13×13 Set 4
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2
3
4
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6
Across
  1. 1. A word related to science
  2. 3. Type of bond between ions
  3. 4. Plant life of a region
  4. 5. Simple machine for lifting
  5. 6. Mixture of two or more metals
Down
  1. 1. A word related to science
  2. 2. Tiny reproductive unit of fungi
  3. 4. A word related to science