Graeme Bauer Great lakes

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Across
  1. 2. The only great lake that is fully inside the US
  2. 4. Home to over 30,000 islands
  3. 6. A System of predator and prey in an ecosystem
  4. 8. The percent of the world's fresh water the great lakes store
  5. 10. An invasive species of mussel that grows in large clusters
  6. 13. a green plant that grows over the surface of water
  7. 15. the smallest of the great lakes
Down
  1. 1. Water can appear white because of the chemicals inside
  2. 3. The river that caught fire in 1969
  3. 5. a bird that was extremely affected by DDT
  4. 7. A toxic chemical that caused much pollution in the lakes
  5. 9. A Vampire-like invasive species of fish
  6. 11. The largest of the great lakes
  7. 12. the abbreviation for the great lakes
  8. 14. The reason the great lakes were formed