1. The Sahara Desert

2. Where is it? What is it?
The Sahara Desert is in the northern part of Africa reaching from Mauritanian to Egypt and Sudan. 
This is right next to Mediterranean sea, the Red sea, and the Atlantic ocean. 
It has a area of 9,200,000 square kilometers (or 355,200,000 square miles).
It is considered one of the most dangerous conditions on the Earth and is the third largest desert, right behind the Antarctica and the Artic (cold deserts).
There are very low on rainfall, have only two permanent rivers and has very

3. How was it formed?
It is believed that Africa was once a lush tropical forest that had dried out into a desert.
The mountains in the northern plate are most likely formed by the convergent plate boundary where the plate cracked and spewed up magma to make a volcano that erupted lava that turned into the mountains. 

4. How does this affect the lithosphere?
The acidification of  North Africa affects the lithosphere by getting rid of the vegetation that kept the soil rich and then the rocks were withered down to sand.

5. How does it affect the Hydrosphere?
With the mass acidification, a lot of the small water sources had been dried up with the soil, making the  only water to stay would be the larger bodies of water. 

6. How is the biosphere affected?
The mass acidification changed the climate drastically and the plants and the majority of animals gone extinct in that area. 

7. How does this affect the atmosphere?
Co2 would have been increased in that area and that would have put a hole in the atmospheric ozone.

8. Works Cited
Zimmermann, Kim Ann. "The Sahara: Facts, Climate and Animals of the Desert."
               LiveScience. Purch, 12 Sept Web. 16 May 2017.
Stepwise Holocene Aridification in NE Africa Deduced from Dust-borne Radiogenic Isotope Records. N.p., n.d. Web. 16 May 2017.