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Questions for Discussion: Global Water Distribution

Make a prediction: How much of the water on Earth is fresh water? Salt water? Where is fresh water found? Where is salt water found?
Use this resource to check your prediction. Were you surprised by anything? How would you revise your prediction based on this information?
What is so striking about these bar graphs when you consider that all life on land depends on fresh water?
Considering the percentage of usable fresh water, what should humans be concerned about when they use water?
What would probably happen to these percentages if global warming caused the Earth's temperature to eventually rise by a few degrees? What would happen if we suddenly went into another ice age?