Unit 6 Part 1

The Arabic word Sahel means

• desert

• border

• shore

• vast

Why do residents of the Sahel welcome the harmattan?

• It is a cool, moist wind that signals the start of the rainy season.

• It is a hot, dry wind that rids the air of its humidity.

• It is a warm, moist wind that brings mild precipitation to coastal areas.

• It is a cool, dry wind that decreases temperatures in the summer.

The vegetation of the Sahel is

• low-growing grasses, shrubs, and acacia and baobab trees.

• shrubs interspersed with evergreen forests.

• rainforests, prairie grasses, and cacti.

• low-growing grasses, cacti, and drought-resistant shrubs.

The average annual rainfall in the Sahel is

• 4-8 inches.

• 8-12 inches.

• 8-12 inches.

• 14-18 inches.

The population of the Transition Zone

• is relatively small.

• is rapidly growing.

• has remained steady for the past 30 years

• has declined significantly in recent decades.

Most people in the Transition Zone live in

• nuclear families headed by a male family member.

• nuclear families headed by a female family member.

• extended families headed by a male family member.

• extended families headed by a female family member.

In subsistence farming, a farmer

• receives compensation from the government to plant specific crops.

• grows crops primarily to feed his or her family, selling any small surplus.

• rotates crops every season to maintain soil fertility and prevent diseases.

• plants fast-growing crops to take advantage of short growing seasons.

An example of successful water management being practiced in the Transition Zone is

• restricting water use to alternate days

• recycling waste water.

• collecting rainwater in basins.

• using drip irrigation for farming

The Great Green Wall is a plan to create

• a “green” Sahara by planting trees and grasses in it.

• a barrier of trees to stop the spread of the Sahara.

• a belt of fertile land that can be used for agricultural purposes.

• a “green” Transition Zone by using better crop varieties and irrigation processes.

Lake Chad is being polluted by

• ore mines.

• electronic manufacturers.

• cotton and rice farmers.

• tourists and livestock waste