– A desert biome is defined as having an annual precipitation of less than 25 cm.
– Deserts receive low precipitation; variable temperatures; & soils rich in minerals but poor in organic material.
– Deserts are dispersed over Africa, Asia, the Middle East, United States, Mexico, South America, & Australia.
-Cacti, creosote bushes, and other succulents inhabit a desert biome.
– Many deserts undergo extreme temperature changes during the day, fluctuating between hot & cold.