All of the following factors have contributed to the desertification of the Sahel except: Deforestation

Overgrazing

Desalination

Poor soil management

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

Explain the cause for movement river valley civilization to early industrial centers

The yellow river is also known as the huang he river? true or false