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Unformatted text preview: percent is fresh water that is drinkable in the lakes, rivers, or streams and this is what humans depend on from the Hydrosphere. The biosphere is where all living beings on this planet are present. This is where pressures are low enough to support life, air is breathable, and water can be found in the liquid state to support life. The lithosphere is the outer shell of the earth that is solid. It is composed of the entire crust, and goes down almost a hundred miles. This is where we find oil, salt, gold, diamonds, and all other resources that we mine from the ground. If we did not have all these systems working exactly how they do us humans would find it extremely difficult to survive and we would not make it very long without just one of these systems. I would like to choose North America for our final project....
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- Spring '11