Ecosystems-Topics 4 and 5

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Across
  1. 3. a terrarium is an example of a closed ______.
  2. 6. a relationship that involves one organism benefiting while harming the other
  3. 7. If the producers produce 1,000 kcal of available energy, how many kcal will be transferred to the first-level consumers
  4. 8. when the death rate is higher than the birth rate, the population ______.
  5. 9. series of events usually in a straight line showing flow of energy
  6. 10. what is released when fossil fuels are burned?
  7. 12. lives on nodules of roots and helps fix nitrogen
  8. 16. moving into a population
  9. 17. when a gas cools and becomes little water droplet and/or forms clouds
  10. 20. shows amount of energy that flows from one level to the next is an energy ____.
  11. 21. a factor that causes a population to stop growing
  12. 22. breaks down biotic waste
  13. 25. when water molecules return to the Earth in forms of rain, snow, hail, or sleet
  14. 27. living thing
  15. 29. the number of individuals divided by the unit area is the population _____.
  16. 30. food, water, shelter (everything an organism needs)
  17. 31. when liquid molecules warm up and become a vapor and rise into the atmosphere
  18. 32. An environment that provides everything the organism needs
  19. 33. includes both the living and nonliving things that make up the environment
Down
  1. 1. a relationship when both species benefit
  2. 2. all the different populations/species that live together in an area
  3. 4. obtains energy by feeding on other organisms
  4. 5. an organisms role in the ecosystem
  5. 6. all the members of one species living in a particular area
  6. 9. nitrogen _______ is when nitrogen is changed into a usable form
  7. 10. what do we release during cellular respiration?
  8. 11. a living factor
  9. 13. moving out of a population
  10. 14. the law of conservation of ______, states that matter is neither created nor destroyed
  11. 15. the law of conservation of _____, states that when one form of energy is transformed no energy is lost
  12. 18. a nonliving factor
  13. 19. consists of many overlapping food chains
  14. 23. a relationship when one species benefits and the other is neither harmed or helped
  15. 24. can make its own food
  16. 26. what do plants release?
  17. 28. is any relationship where two organisms interact