'Of about 10, 30, or 50%, percentage of Earth's surface covered by land'
30%
THE WORLD: Of about 10, 30, or 50%, percentage of Earths surface covered by land
Of about 10, 30, or 50%, percentage of Earth's surface covered by land
Of about 10, 30, or 50%, percentage of Earth's surface covered by land
THE WORLD
30%
THE WORLD