How much of the world is covered by desert

Question

about 1/3

over 3/4

less than 1/5

Answer 1

Deserts cover about one-fifth of all the land in the world. Most deserts lie along the Tropic of Cancer and Tropic of Capricorn, imaginary lines that lie north and south of the equator.

Answer 2

Deserts cover about one fifth of the Earth's surface.  Not land area, but the entire surface of the earth.

Answer 3

Well over 90 percent of the world is covered entirely in sand and shows no signs of intellegent life.