Chain Crosswords Long Science Medium — Set 5

Medium 13×13 Set 5
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2
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7
Across
  1. 1. Plant life of a region
  2. 2. Compound of oxygen and another element
  3. 5. A word related to science
  4. 7. Focused beam of coherent light
Down
  1. 1. A word related to science
  2. 3. A word related to science
  3. 4. Molten rock beneath the surface
  4. 5. Simple machine for lifting
  5. 6. Push or pull on an object