Chain Crosswords Short Nature Medium — Set 6

Medium 13×13 Set 6
1
2
3
4
5
6
7
Across
  1. 1. Path around a celestial body
  2. 2. A word related to science
  3. 4. A word related to science
  4. 6. Focused beam of coherent light
  5. 7. Push or pull on an object
Down
  1. 1. Protective gas layer in atmosphere
  2. 3. Compound of oxygen and another element
  3. 5. Plant life of a region
  4. 7. Substance that flows freely