Chapter 20 Vocabulary

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Across
  1. 3. study of how living things interact with each other and with their environment is
  2. 6. different populations that live together in an area make up a
  3. 9. lives off of other thing without benefitting the host
  4. 11. factor nonliving parts of an organism's habitat
  5. 12. not enough available resources
  6. 13. microscopic, single-celled organisms, live everywhere
  7. 14. obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its environment
  8. 15. community of organism that live in a particular area make up an
Down
  1. 1. environment that provides the things teh organism needs to live, grow and reproduce
  2. 2. struggle for available resources, foods, sunlight, water,and place to live
  3. 4. inside and outside
  4. 5. Species danger of becoming extinct
  5. 7. only seen with a microscope type of organism
  6. 8. same species;compete with each other;all living things
  7. 10. is a group of organisms that physically similar and can mate with each other and produce offspring
  8. 13. factor organism interacts with both the living and nonliving parts of it's habitat