Unit 5 Africa's Geography

To supply water through ditches, pipes, or canals to areas without water, usually for the purpose of growing crops, is known as

• Irrigation

• Poor sanitation

• Economic development

• Desertification

Which statement describes the problem of poor water quality in Africa?

• Poor water quality can be solved by building more dams.

• Poor water quality can be solved by irrigation in Africa’s dry areas.

• Poor water quality is mostly a result of industrial pollution

• Poor water quality is mostly a result of sewage and garbage

Desertification is caused by

• overpopulation, migration, and decline

• deforestation, drought, and overgrazing

• sewage, parasites, and poor sanitation

• crop rotation, fertilizers, and insecticides

Many people in Africa do not have access to safe drinking water because the water is

• polluted by irrigation

• contaminated by drought

• infected by parasites and bacteria

• polluted by slash and burn agriculture

Slash and burn agriculture is mainly harmful to Africa because it

• causes deforestation in the rainforest

• increases the number of parasites in the rivers

• pollutes the soil used for farming

• worsens the unequal distribution of water

Irrigation is necessary in many parts of Africa in order to

• decrease the need for dams

• increase the amount of clean drinking water

• increase the amount of farmable land

• decrease the need for water treatment plants

What affect does poor soil and deforestation have on land in Africa?

• Land becomes a better place to raise a family

• Land is useless for farming and agriculture

• Land is excellent archeological dig sites

• Land becomes part of national park systems

In sub-Saharan Africa, less than 50% of the population has access to safe drinking water because of environmental pollution. How has this shortage of safe drinking water affected development in sub-Saharan Africa?

• Slowed the deforestation of the rain forest

• Increased population growth

• Increased size of the Sahara

• Slowed economic growth

Which of the following are the causes of deforestation in Africa’s tropical rainforest?

• logging, settlement, agriculture

• erosion, poor soil, poor harvests

• overpopulation, poor sanitation, parasites

• dams, irrigation, transportation

Which of the following are effects (results) of deforestation?

• overpopulation, poor sanitation, parasites

• erosion, poor soil, poor harvests

• dams, irrigation, transportation

• logging, settlement, agriculture