Living Things and Ecosystems

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Across
  1. 3. A living thing
  2. 4. Chain A model showing the path of energy through a series of organisms in an ecosystem
  3. 6. The animal that is captured and eaten
  4. 11. An animal that captures and eats other animals
  5. 12. An organism that breaks down dead organisms and wastes to live and grow
  6. 15. An event that changes an ecosystem for a long period of time.
  7. 17. A consumer that eats only other animals
  8. 20. Species A non-native kind of organism that causes harm to an ecosystem.
  9. 21. A gas found in the air that is used to make food by photosynthesis
  10. 22. A living thing that obtains energy by eating other living things
  11. 23. Everything that surrounds and influences an organism
  12. 24. The slow changes that take place in an ecosystem that has been disturbed.
Down
  1. 1. A mixture of soil and decaying matter that provides the materials that plants need
  2. 2. A consumer that eats both plants and animals
  3. 5. The process that breaks down food into simple materials that an animal's body can use
  4. 7. The process of moving blood in a large, complicated loop through the body
  5. 8. The process that producers use to make food from carbon dioxide and water
  6. 9. A gas found in the air that is produced as waste during photosynthesis
  7. 10. A consumer that eats only plants or other producers
  8. 13. A group of organisms that are not plants or animals and that act as decomposers
  9. 14. Pyramid A model that shows the amount of energy that is passed on at each level of a food chain
  10. 16. One group of organisms that are too small to be seen without a microscope
  11. 18. All the living and nonliving things that interact with each other in an area
  12. 19. An organism that makes its own food through photosynthesis