NATURAL RESOURCES

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Across
  1. 1. Absorbs sun's ultraviolet rays
  2. 4. We inhale it
  3. 6. The breath of life
  4. 8. Action of making air etc. dirty and dangerous
Down
  1. 2. Vaporization that occurs on surface
  2. 3. Moving air
  3. 5. It occurs in elemental form
  4. 7. A wonder liquid