UNIT 3

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Across
  1. 2. Need for fire
  2. 4. Land rivers
  3. 6. To put air into something
  4. 7. Group of crystals
  5. 8. Shape that reduces drag from air moving past
Down
  1. 1. Strengthening the heart and lungs by working
  2. 2. volcano stone
  3. 3. Performed in the air
  4. 5. Fireworks