The Desert Biome Presented by Morgan Lamm

The desert biome is one that is hot and dry. It can be found at the lower latitudes, between the Tropic of Cancer and the Tropic of Capricorn. The heat makes it hard for too many types of plants or animals to be able to survive in such a biome. Many desert biomes are formed in areas not too far from mountain locations.
Interesting facts:

-Some deserts are so hot that when it rains, the water evaporates in the air before ever hitting the ground!

-Deserts cover about 20% of the world.

-The Sahara Desert is the largest desert in the desert biome. It covers 300 million square miles!

-The desert biome is actually a big tourist attraction. People like to rock climb and explore!

Biotic factors:

Although it is very hot in the desert, there are still animals that adapt to the climate. These animals are snakes, lizards, tarantulas, the dingo, porcupines, and coyotes.

There are also some common plants in the desert. They are cactus, shrubs, thorn tree, prickly pear, and Saguaro.

One type of competition would be between coyotes and rattle snakes. Both of them fight over food and especially water, since it is very scarce.

An example of a predator-prey relationship is between snakes and rodents. The snake is the predator and the rodent is the prey. While the snake hunts the rodent, the rodent fights to survive.

Abiotic factors:

The desert biome is very dry. The climate is about 32 degrees Fahrenheit at night and 113 degrees Fahrenheit at day. There are very few trees or other elements to retain any heat. The precipitation in Hot and Dry deserts and the precipitation in Cold Deserts is different. Hot and Dry deserts usually have very little rainfall and/or concentrated rainfall in short periods between long rainless periods. This averages out to under 15 cm a year. Cold deserts (like Antarctica) usually have lots of snow and rain around spring. This averages out to 15-26 cm a year.

The Sahara's physical features include arid mountains, plateaus, sand and gravel-covered plains, shallow basins and large oasis depressions.


To survive, desert plants have adapted to the extremes of heat and aridity by using both physical and behavioral mechanisms. Two examples of adaptation in plants are growing long roots to acquire moisture and storing and conserving water.

Just like plants, animals in the desert need water to survive. Some examples of adaptations in animals are how the Thorny Devil drinks from it's skin, the fennec fox has large ears like radars, and the cape ground squirrel uses its bushy tail as a parasol so it takes shade wherever it goes.


Created with images by Moyan_Brenn - "Desert" • werner22brigitte - "black and white saurian animal" • Moyan_Brenn - "Desert" • tpsdave - "utah landscape desert" • Moyan_Brenn - "Desert"

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