Ava I the great lakes

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Across
  1. 3. These massive ice sheets carved out the Great Lakes basins.
  2. 6. The common acronym used to remember the names of the five lakes.
  3. 8. The largest and deepest Great Lake.
  4. 10. The shallowest and warmest of the five lakes.
  5. 11. The straits that connect Lake Michigan and Lake Huron.
  6. 13. The famous waterfall located between Lake Erie and Lake Ontario.
Down
  1. 1. The river and seaway that connects the lakes to the Atlantic Ocean.
  2. 2. The type of water that makes up 20% of the world's surface supply in these lakes.
  3. 4. Category for non-native species like zebra mussels or sea lampreys.
  4. 5. The largest city located on the shores of the Great Lakes.
  5. 7. Over 6,000 of these are estimated to be at the bottom of the lakes.
  6. 8. This lake holds more water than the other four combined.
  7. 9. The smallest lake in surface area, located furthest to the east.
  8. 11. The only Great Lake located entirely within the United States.
  9. 12. Lake with the longest shoreline and home to Manitoulin Island.