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The deepest point in the ocean is nearly 11 km down

Challenger Deep, in the Mariana Trench, is about 10,935 meters (35,876 feet) deep.

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It lies beneath the western Pacific, southwest of Guam, and is named after HMS Challenger. The ocean's average depth is 3,682 meters (12,080 feet).

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Two ice sheets hold most of Earth's fresh water

The Antarctic and Greenland ice sheets together contain more than 99 percent of the land ice and over 68 percent of the fresh water on Earth.

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The Pacific holds more than half of Earth's free water

The Pacific Ocean covers about 63 million square miles and contains more than half of the free water on Earth.

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The Colorado River runs 277 miles through Grand Canyon

The Colorado River travels 277 miles through Grand Canyon and descends about 2,000 feet along the way.

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