AP BIOLOGY

Detailed explanation-1: -Deserts usually get at most 50 centimeters (20 inches) of rainfall a year, and the organisms that live in deserts are adapted to this extremely dry climate. Plants in deserts have adaptations to conserve water.

Detailed explanation-2: -Deserts are arid ecosystems that receive fewer than 25 centimeters (10 inches) of precipitation a year.

Detailed explanation-3: -Animal adaptations The absence of sweat glands, and the concentration of urine are other physical adaptations made by desert animals. Because fat intensifies heat, a unique physical adaptation of some desert animals is the storage of fat in humps or tails, rather than throughout the entire body.

Detailed explanation-4: -Temperature. During the day, desert temperatures rise to an average of 38°C (a little over 100°F). At night, desert temperatures fall to an average of-3.9°C (about 25°F). At night, desert temperatures fall to an average of-3.9 degrees celsius (about 25 degrees fahrenheit).