Easy

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Across
  1. 3. Type of plant cell
  2. 5. Newton's first law
  3. 7. The reason behind the Earth's orbit
  4. 8. Unit for atom's mass
  5. 9. Can be corrosive
  6. 10. Displacement/Time
Down
  1. 1. Unit for temperature
  2. 2. Ceres
  3. 4. Blue-Green Algae
  4. 6. Found naturally
  5. 9. Also called base