The formation of the Sahara desert (from what were wetlands 10,000 years ago).
Desertification - the southward spread of the Sahara - is the major threat to the Sahel.
Desertification
No, the Sahara has been growing steadily for decades due to desertification.
Desertification
Through the process of desertification, the Sahara is growing rapidly each year.
The Kalahari Desert is south of the Sahara.
Desertification :D
dry
No, the Sahara will never reach Spain. It is moving south into the Sahel, not into the Mediterranean Sea.
The Sahara is rapidly expanding due to desertification.
Yes: this process is called "desertification". The Sahara Desert is encroaching south upon the Sahel. The catalyst to this was the drought which occurred in Africa from 1968 to 1973, and the Sahel continues to be drought-prone, which in turn increases desertification. The Sahara desert is estimated to be growing at a rate of 0.6 km every year.
No, overgrazing did not create the Sahara Desert. The Sahara Desert was formed as a result of shifts in the Earth's climate and tectonic plates over millions of years. Human activities like overgrazing and deforestation can exacerbate desertification, but they were not the primary cause of the Sahara.