Cells to Organisms to Ecosystems

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Across
  1. 3. – land-based ecosystem
  2. 6. – a single living thing
  3. 8. – aquatic ecosystem with saltwater
  4. 9. – group of organs working together
  5. 10. – amount of salt in water
  6. 13. – multiple populations living together
  7. 14. – aquatic ecosystem with little salt
  8. 16. – group of similar cells working together
Down
  1. 1. – structure made of tissues that performs a function
  2. 2. – living or once living parts of an environment
  3. 4. – living and nonliving parts interacting together
  4. 5. – organisms of the same species living in the same area
  5. 7. – smallest unit of life
  6. 11. – water-based ecosystem
  7. 12. – measure of how hot or cold something is
  8. 15. – nonliving parts of an environment