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Questions for Discussion: Antarctic Ice: Sea Level Change

What is the different effect on sea level between the breaking and melting of ice sheets already floating on seawater and the breaking and melting of ice sheets sitting on bedrock? Explain.
Research and discuss which cities around the world would be in trouble with even a 1-foot rise in sea level.
What would the effects be of a rising sea level?
What are possible reasons that the sea temperature is rising?