Unit 7 Crosword

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Across
  1. 3. An area where water drains
  2. 4. Series of overlapping food chains
  3. 7. all living organisms on earth
  4. 9. Groups of populations that interact with each other in a given area
  5. 11. Both species benefits
  6. 12. Non-living things in the environment
  7. 17. All the members of one species that live together
  8. 18. all the water on earth
  9. 20. when species within an ecosystem compete for the same resources
  10. 21. Study of the oceans
  11. 23. Lives on land
Down
  1. 1. Current in the ocean that brings deep, cold water to the surface containing high concentrations of nutrients
  2. 2. The measure of the amount of solid or salt dissolved in seawater
  3. 5. An area of the land that water drain into
  4. 6. How water is circulated on earth
  5. 8. An interaction between species in with predators eat prey
  6. 10. Living things within the environment
  7. 13. Lives in water
  8. 14. One organism gets the benefits at the others expense on them
  9. 15. One species benefits and the other species is neither harmed nor benefitted
  10. 16. Mainly bacteria and fungi, consumers that use waste and dead organisms for food
  11. 19. All gases surrounding earth
  12. 22. Role and position a species has in it environment