meta brain

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Across
  1. 3. grey-black coloured non-magnetic material
  2. 7. Mixture with evenly distributed particles
  3. 9. substance with same type of atoms
  4. 10. mixture of liquid and gas
Down
  1. 1. alloy of iron and carbon
  2. 2. A back and forth movement of particle
  3. 4. Height of sound wave
  4. 5. Dolphin use high-frequency sound to find prey
  5. 6. Atomic number 3
  6. 8. animals get energy by eating