Section: Science

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How might a scientist explain the significance of the earth's water makeup in reference to climate change?

1. Earth's composition of 71 percent water is a benchmark for understanding the amount of drinkable water.
2. Earth's composition of 71 percent water is a benchmark for the Earth's rising temperature. As ice caps melt, sea levels could rise with potentially harmful aftereffects to civilization.
3. Earth's composition of 71 percent water is a benchmark for understanding the world after the Flood.
4. None of the above.