Water Sustainability

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Across
  1. 2. An ecosystem that is either permanently or seasonally filled with water.
  2. 4. A stream or brook.
  3. 6. Artificial lake used as a water supply.
  4. 7. A length of water joining two bodies of water.
  5. 9. A slow-moving body of ice.
  6. 11. An introduced substance with adverse affects on the environment.
  7. 12. Organisms and their physical environment.
Down
  1. 1. A river, canal, or other route for travel by water.
  2. 3. Water the falls to the ground in the form of rain, snow, sleet, or hail.
  3. 5. Flowing water moving through a channel.
  4. 8. A shortage of water.
  5. 10. A layer of permeable rock filled with water.