Why is Africa’s Sahel region decreasing in size?
The map shows physical features of Africa.

Which body of water does the Nile River flow into?
What materials were ancient homes in the Sahara and the Sahel most likely to be constructed from?
Which statement best describes a negative effect of human activity on Africa’s waterways?
What is similar about the desert and savanna zones in Africa?
Which physical feature in Africa borders the Mediterranean Sea?
This map shows regions of Africa that are most at risk for desertification.

What is an example of how natural resources helped advance technology in ancient Africa?
The image shows a geographic zone in Africa.

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