Chain Crosswords Short Nature Easy — Set 4

Easy 11×11 Set 4
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2
3
4
5
6
Across
  1. 1. Oscillation that carries energy
  2. 4. Change from solid to liquid
  3. 5. Iron oxide formed by corrosion
  4. 6. Unit of heredity on DNA
Down
  1. 2. Unit of electric potential
  2. 3. Curved glass that bends light
  3. 5. Water falling from clouds