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T HE S AHARA Dry Desert. W HAT IS T HE S AHARA Hot Desert ( less than 10 inches of rain, temp. range23 to 136 Degrees Fahrenheit with 86 average ) Some.

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Presentation on theme: "T HE S AHARA Dry Desert. W HAT IS T HE S AHARA Hot Desert ( less than 10 inches of rain, temp. range23 to 136 Degrees Fahrenheit with 86 average ) Some."— Presentation transcript:

1 T HE S AHARA Dry Desert

2 W HAT IS T HE S AHARA Hot Desert ( less than 10 inches of rain, temp. range23 to 136 Degrees Fahrenheit with 86 average ) Some area average less than one inch of rain per year.

3 S IZE : T HIRD LARGEST DESERT AND LARGEST HOT DESERT COVERING ABOUT 3,500,000 SQ. MILES Borders 11 Countries

4 P HYSICAL F EATURES

5 ERGS, S AND S EAS WITH DUNES UP TO A THOUSAND FEET HIGH

6 R EGS : PLAINS OF SAND AND BLACK, RED OR WHITE GRAVEL

7 H AMADAS : ELEVATED PLATEAUS OF ROCK AND STONE UP TO 11,000 FEET

8 W ADIS : TEMPORARY WATER SOURCES FED BY RAINFALL

9 O ASIS : A T ITS HUB IS WATER, OFTEN IN THE FORM OF NATURAL SPRINGS, ARTESIAN WELLS OR ENTIRE IRRIGATION SYSTEMS

10 S AHARAN VEGETATION IS GENERALLY SPARSE, WITH SCATTERED CONCENTRATIONS OF GRASSES, SHRUBS, AND TREES IN THE HIGHLANDS, IN OASIS DEPRESSIONS, AND ALONG THE WADIS

11 P LANT L IFE Saharan vegetation is generally sparse, with scattered concentrations of grasses, shrubs, and trees in the highlands, in oasis depressions, and along the wadis

12 The soils of the Sahara are low in organic matter. Soils in depressions are frequently saline. rainfall happens very rarely, but when it does it is usually torrential when it occurs after long dry periods. Wide temperature range. 500 plant species compared to 40000 of Amazon

13 O LEANDER : TYPICALLY FOUND AROUND STREAM BEDS AND OASIS. MAY GERMINATE WITHIN THREE DAYS OF ADEQUATE RAINFALL AND SOW THEIR SEEDS WITHIN 10 OR 15 DAYS OF GERMINATION.

14 D ATE P ALM TREE : UP 75 FEET TALL WITH ROOTS 150 FEET DEEP

15 G RASS : SPREAD OVER A LARGE SURFACE AREA AND TAKE IN ENOUGH MOISTURE TO SURVIVE B ECAUSE OF THE SLIM SURFACE AREA OF THE LEAVES, THE LACK OF MOISTURE THROUGH EVAPORATION IS REDUCED

16 A NIMAL LIFE The dry desert is filled with animal life contrary to what most may believe. The Sahara is filled with small creatures to large mammals. The Sahara is also home to 300 different species of migratory birds.

17 D UNG B EETLE :A SPECIES OF BEETLES THAT FEEDS ENTIRELY OFF ANIMAL WASTE, THE DUNG BEETLE IS AN INTEGRAL PART OF THE S AHARA

18 D EATHSTALKER S CORPION : NOCTURNAL HUNTER, FEED ON SMALL LIZARDS AND INSECTS.

19 D ROMEDARY C AMELS : S TORES FAT IN HUMP, CAN GO WITHOUT WATER FOR WEEKS

20 E NDANGERED AND THREATENED ANIMALS

21 F ENNEC F OX : NOCTURNAL HUNTER WITH LARGE EARS THAT HELP DISSIPATE HEAT. E NDANGERED BECAUSE OF HUMAN OVER TRAPPING

22 T HE A DDAX A NTELOPE : E NDANGERED DO TO OVER HUNTING

23 V ALS GUNDI MOUSE

24 T HREATS TO ENVIRONMENT

25 Human Development threat Drought and Global warming

26 R ESOURCES

27 Underwater reserves Oil Iron ore Coal and natural gas Phosphates


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