Science Crossword Puzzle

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Across
  1. 3. water located on top of the earths surface
  2. 6. an area or ridge of land that separates water
  3. 7. the water found underground in soil.
  4. 9. the surrounding in which a person, animal, or plant lives or operates.
  5. 10. sudden, natural or man-made, situations where change and destruction occurs
  6. 12. the presence in or introduction of a harmful or poisonous substance into the environment.
Down
  1. 1. the various actions for recreation, living, or necessity done by people
  2. 2. a biological community of interacting organisms and their physical environment.
  3. 4. underground layer of water-bearing permeable rock
  4. 5. a global, interconnected system that has regions, or basins
  5. 8. a group of individuals of the same spices living and interbreeding within an area
  6. 11. excess water draining away from land or buildings