Freshwater Ecosystem Challenge!

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. A community of organisms where there are several interrelated ___ chains (7)
  2. 6. A major biotic community characterized by the dominant forms of plant life and the prevailing (5)
  3. 9. An activity that diverts or amuses or stimulates (10)
  4. 10. The wide part of a river where it nears the sea (7)
  5. 12. A terrestrial or aquatic flesh-eating mammal (9)
  6. 13. The state of being ___ or having a job (10)
  7. 14. Long stream of water flowing to the sea (5)
  8. 16. A person who eats all kinds of foods (8)

Down

  1. 1. A community of organisms where each member is eaten in turn by another member (9)
  2. 2. Any animal that feeds chiefly on grass and other plants (9)
  3. 3. Underground bed or layer yielding ground water for wells and springs etc (7)
  4. 5. What we eat to get energy and grow (4)
  5. 7. Clear liquid we drink that falls as rain (5)
  6. 8. Water that is not salty (10)
  7. 11. A large or extra supply of something (9)
  8. 15. The power to do work or make things move (6)