deserts - Deserts - arid, dry regions ~20% of Earths land...

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Deserts - arid, dry regions ~20% of Earth’s land surface. Low annual rainfall < 25 cm. Most are hot; some polar deserts - main form of precipitation - snow <10 in. - e.g. Antarctica No permanent streams. Sparse vegetation (<15%).
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Fig. 21.03 Fig. 21.03 W. W. Norton Major Deserts Major Deserts
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Types of Deserts Types of Deserts Subtropical Deserts: Little cloud cover and rain in subtropics due to atmospheric circulation patterns. Intense solar radiation strikes Earth’s surface. e.g. Sahara
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Subtropical Subtropical deserts deserts located located between between 20 20 0 - 30 - 30 0 N N 20 20 0 - 30 - 30 0 S S latitude. latitude. Atmospheric Circulation Patterns Atmospheric Circulation Patterns
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Types of Deserts Rainshadow Desert Limited precipitation due to barrier (e.g. mountain range) that causes prevailing winds to lose moisture before reaching area . e.g. Mojave - An arid region of southern California southeast of the Sierra Nevadas.
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Mojave Desert Mojave Desert
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General Facts General Facts Occupies a significant portion of southeastern California - >22,000 square miles of land Named after Mohave Indian tribe Mojave is believed to support around 2,000 species of plants
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deserts - Deserts - arid, dry regions ~20% of Earths land...

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