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DesertUSA is a comprehensive resource about the North American deserts and Southwest destinations. Learn about desert biomes while you discover fascinating details about how desert plants and animals learn to adapt to the harsh desert environment. Many DesertUSA visitors bookmark the index page in their browser so they can quickly navigate from here to their favorite locations within DesertUSA.
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The Saguaro Video
The Saguaro often begins life in the shelter of a "nurse" tree or shrub which can provide a shaded, moister habitat for the germination of life. The Saguaro grows very slowly -- perhaps an inch a year -- but to a great height, 15 to 50 feet.
Desert Food Chain Video
A food chain constitutes a complex network of organisms, from plants to animals, through which energy, derived from the sun, flows in the form of organic matter and dissipates in the form of waste heat.
Click here to see current desert temperatures!