Ecosystems Vocab- Lesson 5

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Across
  1. 3. a living thing that eats other living things
  2. 5. a living thing that makes its own food
  3. 6. the gases that surround a planet
  4. 8. a substance that living things need to grow and stay healthy
  5. 10. tiny living things in water that produce their own food, like plants do
  6. 11. a living thing that can break down dead plants, dead animals,or animal waste
  7. 12. tiny, floating living things in water that are smaller than algae and produce their own food
  8. 13. a type of gas that plants sometimes take in and that animals release when they breathe
  9. 14. all the living things that interact with each other and their environment in one
  10. 17. a group of things that affect each other and function as a whole
Down
  1. 1. a living thing that is a decomposer, such as a mold or mushroom
  2. 2. an organism that is usually a decomposer; some cause illness
  3. 4. a set of events that repeats in the same order over and over
  4. 7. anything that takes up space and has weight; can be in different forms such as solid, liquid, or gas
  5. 9. the process of carbon moving through living things and the environment
  6. 15. any living thing
  7. 16. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with