Presentation on theme: "Africa Past to Present. The Sahara is the worlds largest hot desert. Sahel- a transitional zone south of the Sahara, this region is experiencing desertification."— Presentation transcript:
The Sahara is the worlds largest hot desert. Sahel- a transitional zone south of the Sahara, this region is experiencing desertification. Savanna-rolling grasslands with scattered trees and shrubs, there are 4.5 million square miles of savanna. Most of the animals we remember from childhood are found here Savanna Sahel
Widespread desertification is occurring in the Sahel. As the population grows, overgrazing becomes more of a problem. Large herds of animals add to this problem, Many farmers use “slash and burn” techniques to create more farm land- destroying parts of the rain forest. To feed large numbers of people, the soil needs crop rotation and fertilizers that are not available=less food.
The rain forest is located in central Africa, Most in the Democratic Republic of Congo. Many animals and diverse plant life The Rain Forest is under attack through deforestation. Slash and burn clearing to develop roads and farmland.
The Nile River is the longest in the world at 4,100 miles long. The Congo river flows through central Africa-2 nd largest river in Africa Niger River is the main river in West Africa.
The Atlas Mountains are located in Northern Africa. Lake Tanganyika is the longest and 2 nd deepest in the world. Lake Victoria is a freshwater lake-2 nd largest freshwater lake. Victoria Falls
Africa has 4 main climates: desert, rainforest, Sahel and savanna. Most people live near water-that is where the populations are the densest. The climates of the Sahel, savannas and rainforests have more to offer so they have larger populations.
Many of the people in Africa farm for a living. Subsistence farming is frequently practiced-this is where you grow just enough to feed your family. There are a few cash crops. There is some manufacturing.
Poor families need the children to help with the land. Conflict interferes with the ability to go to school. Many nations have a lack of schools, teachers and books. Many students cannot get to schools, since there is little infrastructure in some parts of the continent.
Subsistence Farming-grow just enough to feed your family. Slash and Burn- technique where woods and trees are cut down and burned to make farm land. Desertification-the spreading of the desert due to drought, poor soil planning, over- grazing and poor land use. Sahel-area experiencing desertification.