Water

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Across
  1. 3. Saving water from being wasted.
  2. 5. the O in H2O stands for
  3. 6. tasteless, colourless liquid at room temp
  4. 7. chemical structure of water
Down
  1. 1. 100 degrees
  2. 2. the H in H2O stands for
  3. 4. one type of water is ______ water