Crossword Levels of Organization

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Across
  1. 2. The organ system that circulates blood around the body.
  2. 4. A group of similar types of cells that work together.
  3. 6. The organ system that provides structure and support.
  4. 8. A group of organs that work together to perform a specific task.
  5. 10. The organ system that takes in oxygen and releases carbon dioxide.
  6. 11. The organ system that breaks down food to obtain nutrients.
  7. 12. A group of different tissues working together to perform a job.
Down
  1. 1. A group of organ systems working together.
  2. 3. The organ system that is responsible for movement of the body.
  3. 5. The organ system that carries and interpret messages.
  4. 7. The organ system that removes waste from the blood.
  5. 9. All living things are made of?