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What is Silt?
Small particles of rich soil are called Silt.The Nile river carried the silt along the river when the river flooded its banks; it left the silt on the land which made it better for farming.
What is Erg
An ERG is a Huge area of shifting sand dunes in Sahara between the Southern Atlas Mountains and Ahagger mountain ranges in Southern Algeria
what is Wadi
Dried up river beds in Saudi Arabia are called wadis. They fill with rainwater and help water crops.
Who were the Berbers
The first people to live in North Africa were the Berbers. They had brought Arabic language to Africa.