AP BIOLOGY

Detailed explanation-1: -The biggest Desert is northern Africa’s Sahara desert.

Detailed explanation-2: -What Is a Desert? Deserts cover more than one-fifth of Earth’s land area, and they are found on every continent. A place that receives less than 25 centimeters (10 inches) of rain per year is considered a desert. Deserts are part of a wider class of regions called drylands.

Detailed explanation-3: -Answer and Explanation: Approximately 33 percent of the Earth’s land surface is covered in desert. Some of these deserts are well-known such as the Sahara Desert in Northern Africa. Other deserts, however, might surprise you.

Detailed explanation-4: -Deserts are found on every continent and cover about one-fifth of Earth’s land area.

Detailed explanation-5: -Based on this definition, almost one third of all land area is classified as desert. This area has been increasing due to global climate change and loss of some wetlands all around the world. Since 71% of the Earth is covered by water then about 9.5% of the Earth’s surface is desert.