science

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Across
  1. 5. ability of an ecosystem to maintain biodiversity and production indefinitely.
  2. 6. to maintain the natural state of an ecosystem.
  3. 9. different forms of a gene
  4. 10. environment that provides the things a specific organism needs to live and grow
  5. 12. nonliving parts of an organisms habitat.
  6. 15. a plants growth response toward or away from a stimulus
  7. 17. chemical released by one animal to attract another
  8. 20. source of penicillin
  9. 21. coming into
  10. 23. help with neurological disorders
  11. 25. chemicals that affect growth and development
  12. 27. a response to a stimulus
  13. 28. biodiversity has both economic and ecological
Down
  1. 1. series of events in which one organism eats another and obtains energy.
  2. 2. a maple tree
  3. 3. process of a gas changing to a liquid.
  4. 4. any relationship where two species live closely together.
  5. 7. process where well suited individuals in an environment tend to survive.
  6. 8. something that provokes or cause an action or response
  7. 11. major body changes as they grow into adults.
  8. 13. obtains energy by feeding on other organisms.
  9. 14. regular seasonal journey of an animal from one place to another.
  10. 16. series of predictable changes that occur in a community over time.
  11. 18. the disappearance of all members of a species from earth.
  12. 19. a type of stimuli
  13. 22. ferns and cedar trees rely on for fertilization
  14. 24. consumers that eat only plants.
  15. 26. the study of how organisms interact with their environment.