Chain Crosswords Short Nature Easy — Set 7

Easy 11×11 Set 7
1
2
3
4
5
6
Across
  1. 4. Iron oxide formed by corrosion
  2. 5. Underwater ridge of coral
  3. 6. Change from solid to liquid
Down
  1. 1. A word related to science
  2. 2. A word related to science
  3. 3. Burning ball of gas in space