Environment

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Across
  1. 3. To keep something for later.
  2. 4. The name of our planet.
  3. 6. The gas we breathe.
  4. 7. Make something dirty.
Down
  1. 1. A tall plant that gives us oxygen.
  2. 2. A clear liquid that we drink.
  3. 5. Reuse things.
  4. 6. A living thing that can move.