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Preview · 5 of 101
What is the approximate age of Earth?
Quiz · 4 choices
2
Earth's inner core is primarily composed of solid iron and nickel.
True / False
3
Which layer of Earth lies directly beneath the crust?
Quiz · 4 choices
4
The Pacific Ocean covers a larger area than all of Earth's landmasses combined.
True / False
5
What percentage of Earth's surface is covered by water?
Quiz · 4 choices
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