Introduction to the principles
- Bodies of fresh water:
The Great Lakes, bodies of fresh water with many features, are connected to each other and to the world ocean.
- Natural forces formed the Great Lakes:
Natural forces formed the Great Lakes; the lakes continue to shape the features of their watershed.
- Influence on weather and climate:
The Great Lakes influence local and regional weather and climate.
Water makes Earth habitable; fresh water sustains life on land.
- Diversity of life and ecosystems:
The Great Lakes support a broad diversity of life and ecosystems.
The Great Lakes and humans in their watersheds are inextricably interconnected.
- Much to be learned:
Much remains to be learned about the Great Lakes.
The Great Lakes are socially, economically, and environmentally significant to the region, the nation and the planet.