Chapter 3 Science

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Across
  1. 4. green substance found in most plants
  2. 8. an organism that lives in or on another organism and receives benefits, usually while harming the other other organism
  3. 12. process by which green plants use the sun's energy to make food
  4. 13. organisms that make their own food
  5. 15. process by which some organisms use chemical energy to make food
Down
  1. 1. group of organisms belonging to the same ecosystem
  2. 2. organisms that eat other organisms
  3. 3. simple, nonflowering plant that is usually found in or around water
  4. 5. the end of or the dying out of a type of organism
  5. 6. single-celled organisms that have plant, animal or fungus characteristics
  6. 7. very tiny living organisms
  7. 9. organisms that break down dead organisms
  8. 10. simple plant that forms a crust-like growth on rocks or tree trunks
  9. 11. so small as to be seen only with a microscope
  10. 14. shared