Bill Nye: Water Cycle : About 70% of the Earth’s surface is covered in water, and almost all of that water has been around since the Earth formed billions and billions of years ago. That means a glass of water you drink today could be water that a dinosaur once... (more details for Bill Nye: Water Cycle )

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File by K. DURAN (#1767)
2011-10-15 Grade: 9-10