Ecosystems

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Across
  1. 1. eagles are ________ while rabbits and mice are their prey.
  2. 3. Fleas are blood-sucking _______ usually found on mammals.
  3. 4. a place where the organism lives
  4. 5. porcupine fish has sharp ________ to protect itself from enemies.
  5. 8. organisms that feed on and break down dead plants and animals into simpler
  6. 11. Plants need this to make food through photosynthesis.
  7. 12. organisms in this ecosystem can tolerate a pH of about 7.
  8. 14. group of organisms of the same kind living together in a habitat
  9. 15. adaptations are features of an organism that help it to survive.
  10. 16. different populations living together in the same habitat form
  11. 17. plant are known as producers
  12. 18. this species of plants grow in muddy area that lack oxygen supply.
  13. 19. shows the feeding relationships between organisms.
  14. 20. adaptations are the ways an organism behaves in order to survive.
Down
  1. 2. As energy passes along a food chain, the amount of energy transferred gradually ____________.
  2. 6. Animals that eat only plants
  3. 7. Butterflies have a ________ relationship with flowers
  4. 9. Some birds do this over large distances to avoid cold weather.
  5. 10. process of releasing energy from food
  6. 13. community of organisms in a habitat that interact with one another and with their physical environment.
  7. 16. protect and preserve the natural environment by using the earth’s resources wisely