Under the Sea: How much do you know about our watery planet? Take our quiz!

The ocean is a watery and wonderful place. How much do you know about it?

8. What percentage of Earth’s freshwater is frozen?

Umit Bektas/Reuters/File
A man rides a horse-drawn carriage on the frozen Cildir lake in Kars province, eastern Turkey (February 5, 2016).

19 percent

76 percent

69 percent

84 percent

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