AP BIOLOGY

Detailed explanation-1: -One thing all deserts have in common is that they are arid, or dry. Most experts agree that a desert is an area of land that receives no more than 25 centimeters (10 inches) of precipitation a year. The amount of evaporation in a desert often greatly exceeds the annual rainfall.

Detailed explanation-2: -Deserts are extremely dry and hot regions that receive almost no rainfall, and hence have minimal vegetation.

Detailed explanation-3: -True or false: All deserts have sparse vegetation and low species diversity. False. While abundance may be low, species diversity in deserts may be high because organisms have unique adaptations to the environment..

Detailed explanation-4: -’True deserts’ where vegetation cover is exceedingly sparse, correspond to the ‘hyperarid regions of the earth, where rainfall is exceedingly rare and infrequent.