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By Draven Bass Anya Bingman Ethan Karr Kiersten Yahn Period 1 January2011

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The desert receives less than 10 inches of rain each year. In a hot desert, the main precipitation is rain. In a cold desert, the main precipitation is snow or fog. Precipitation is very seldom in the desert.

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The Desert is very dry and hot, with a temperature of over 100 F. During the night, the temperature can get as low as 40 F. The humidity ranges from 10 to 20 percent each day The temperature can get very hot during the day, but cold at night.

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The three most common natural disasters in a desert are: FiresCold WeatherRain that may cause floods

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5 Desert Animals Arizona Bark Scorpion Caracal Sidewinder Rattlesnake Gila Monster Thorny Devil Animal Adaptations Dry Climate Scarce To No Water Must be able to hunt for Their Own Food Nocturnal, or live Underground Birds are Nomadic (Migrate) Some animals live underground where it is cold and not in the climate aboveground. Some desert animals are nocturnal because its cooler at night than it is during daylight hours.

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5 Desert Plants Saguaro Cactus Barrel Cactus Old Man Cactus Prickly Pear Dragon Tree Adaptations Dry Climate Scarce To No Water Must Produce Their Own Food Grow Long Roots to Find Water Underground Cacti Store Water The outside of the cactus is fleshy and spongy with thorns. The cactus stores water when it rains it expands and stores the water that flows through the fleshy outside layer Most desert plants live over 100 years.

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Most deserts are found 30 latitude North and 30 south. Found in: Africa, Asia, Europe, America, and Australia

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Grand Canyon Powell Lake Hoover Dam

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Fossils Rocks Rare animals Lots of interesting Living things Many canyons Boating /Sailing Fishing Tours Wonderful memories Informational

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The soils are course textured, shallow, or rocky with good drainage. Some of the plants have extensive root systems close to the surface where they can take advantage of any rain showers.

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Plants with thick stems can take in large quantities of water when it is available. Deserts Agriculture with vast plant life. During the Stone Age Native Americans live in caves like this in the desert.

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Deserts ecologys are changing because global warming is causing higher temperatures that increase the number of wildfires that alter desert landscape. Global warming is taking away desert plant life and replacing it with grasses.