EVERYDAY SCIENCE

Detailed explanation-1: -Deserts get about 250 millimeters (10 inches) of rain per year-the least amount of rain of all of the biomes.

Detailed explanation-2: -Deserts are the driest biome, receiving less than 25 cm of rain each year. The land is bare because the soil doesn’t have much organic matter.

Detailed explanation-3: -Rainfall is lowest on the Atacama Desert of Chile, where it averages less than 1.5 cm. Some years are even rainless. Inland Sahara also receives less than 1.5 cm a year. Rainfall in American deserts is higher-almost 28 cm a year.

Detailed explanation-4: -The desert and the nonforest biome (tundra) are the two biomes that receive the least amount of rainfall during the year. The tundra receives very little precipitation about 6-10 inches annually, mostly in the form of snow, and the desert receives less than 9.9 inches per year.

Detailed explanation-5: -Humidity-water vapor in the air-is near zero in most deserts. Light rains often evaporate in the dry air, never reaching the ground. Rainstorms sometimes come as violent cloudbursts. A cloudburst may bring as much as 25 centimeters (10 inches) of rain in a single hour-the only rain the desert gets all year.