Unit 5

It is difficult to grow crops in much of inland Africa MAINLY because of the region's lack of

• soil.

• sun.

• land.

• water.

Polluted water from a factory has flowed into a river. The water pollution will affect the river in all of the following ways EXCEPT

• increasing the number of fish that live in the river.

• increasing the amount of poisons in the water.

• decreasing the drinkability of the water supply.

• increasing the possible number of sick children who live near the river.

Extensive commercial logging, the use of wood for cooking and heating, and excessive clearing of land by subsistence farmers has led to __________________ in most areas of Sub-Saharan Africa.

• erosion

• deforestation

• desertification

• water pollution

Which is an effect of deforestation?

• an increased number of animal species due to the land that has been cleared

• a decrease in the number of floods since there are less trees to trap rainfall

• an increased amount of soil erosion and poor soil quality due to a lack of roots and nutrients

• a larger variety of agricultural products since there are less trees to take out nutrients in the soil

If population growth occurs in an area that depends on farming, what might be a direct result?

• Mining for minerals in the area will decrease.

• Air pollution from farm equipment will increase.

• Deforestation will occur to clear land for additional farms.

• The area will also see an increase in industrial productivity.

Which statement BEST describes the effects of drought, desertification, and erosion on the people who live in the Sahel on the edge of the Sahara Desert?

• These factors have led to warfare between tribes in the region.

• These factors have caused a great migration of people from the region.

• These factors have caused the United Nations to declare the region endangered.

• These factors have led to hunger in the region because of a lack of arable land.

Overfarming and overgrazing farmlands have been a major influence in which destructive process?

• deforestation

• reforestation

• desertification

• income distribution

"It is very hard for me to farm here due to overgrazing and poor soil. My farm land is slowly becoming a desert." The quote is best describing which region?

• Sahel

• Tropical Rainforest

• Savanna

• Sahara

What is the main reason farming is unsuccessful in Africa?

• Not enough space

• Not enough sun

• Not enough water

• Not enough shovels

Which country is shaded?

• South Sudan

• Nigeria

• South Africa

• Egypt