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Environmental Issues in Africa. SS7G2: The Student will discuss environmental issues across the continent of Africa. Explain how water pollution and the unequal distribution of water impact irrigation, trade, industry, and drinking water.
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Environmental Issues in Africa SS7G2: The Student will discuss environmental issues across the continent of Africa. Explain how water pollution and the unequal distribution of water impact irrigation, trade, industry, and drinking water. Explain the relationship between poor soil and deforestation in Sub-Saharan Africa. Explain the impact of desertification on the environment of Africa from the Sahel to the rainforest.
Polluted Water: Unfit to Drink • Water Pollution is a problem in African Countries. • Pesticides, fertilizers, human waste • Mining and manufacturing byproducts
Water Pollution • Consumption of polluted water causes illness. • Negative effect on the economy. • When people are sick, they don’t work. • In rural areas, 1 million children die yearly • Many humanitarian efforts provide clean water for African Countries. • Population growth decreases the amount of clean water.
Water Pollution • Polluted water negatively effects the fishing industry • Kills the fish, makes them unfit to eat • Oil spills contribute to water pollution. • Affects trade by ruining land for farming and water for fishing. • Niger River Delta • One of the most polluted places on earth.
Water Pollution Although some African Countries have industry generated income, the benefits of the businesses are cancelled out by the cost of water pollution.
Water Pollution • Few places in Africa can purify the drinking water or have plumbing systems • Water gathered one bucket at a time • Fresh water is scarce in parts of Africa • Water supply is needed in cities as population increases in cities. • Irrigation is used in agriculture (capital investment) • Some systems are productive, while others are not
Deforestation Deforestation: The loss of forest from cutting down too many trees. • What is the main cause of deforestation according to the pie chart above? • What % of deforestation is agriculture responsible for? • What is the smallest cause of deforestation?
Deforestation • Nearly 90% of the coastal rainforests in West Africa have been cut down since 1990s • Result: Deforestation • When trees are gone, nothing can hold soil in place. • Wind blows, rain pours, and remaining soil is eroded. • Nutrients washed away, sun bakes exposed soil • Leaving farmland unusable
Desertification Desertification: Process in which a desert spreads and the soil loses its ability to hold water. Causes of Desertification - poor farming practices - land clearing -overgrazing of livestock -draining of water for industrial or home use
Desertification • 1960s a drought in the Sahel caused the Sahara to spread down into the Sahel • People, plants, and animals compete for water supply • Sahel is also attacked from the South • Poor agriculture • Slash and Burn in the Rainforest • Top soil blows away, sand dunes are created, vegetation suffocated • Harvest crops, until the soil is depleted and move on to a new area.
Review….. • What are the 3 main environmental problems in Africa? • The loss of forest from cutting down too many trees is known as….. • Process in which a desert spreads and the soil loses its ability to hold water • What area in Africa is at the highest risk of Desertification? • What industry is most impacted by water pollution? • How do oil spills in the water affect agriculture and trade?
