Chapter 20 Quiz Review

Which of these is a major difference between the Sahara and the Sahel?

• The Sahara has larger forests.

• The Sahel receives more rainfall.

• The Sahara has more cropland.

• The Sahel records higher temperatures.

Marginal land is best described as land that is _________________.

• watered by an oasis

• on the edge of a town

• not well suited for farming

• best used for raising cash crops

What do Ergs, Regs, and Hammadas have in common?

• They are all desert flora.

• They are all desert fauna.

• They are all desert land-forms.

• They are all desert ecosystems.

What does this diagram tell about oases?

• Oases are not found in deserts.

• Oases are created in many ways.

• Oases are created only by humans.

• Oases are not fed by natural springs.

What is the main reason pastoral nomads move from place to place?

• to sell their trade goods

• to care for their date palms

• to clear new land for their crops

• to find fresh pasture for their herds

Which statement explains the importance of date palms best?

• Date palms provide shelter for nomads and their herds.

• Date palms provide food, fuel, and materials for homes.

• Date palms provide drinking water for people and animals.

• Date palms provide a cash crop for farmers on marginal lands.

All of the following are major causes of desertification except ______________.

• overgrazing

• defoerestation

• long-term drought

• shifting agriculture

Which of the following are most threatened by desertification?

• croplands

• forested areas

• marginal lands

• wilderness areas

Which definition matches best with desertification?

• The process in which an area becomes increasingly dry.

• The process in which an area becoming increasingly wet.

• Land not well suited for farming.

• Land well suited for farming.

The Sahara gets is name from the Arabic term "sahra" which means _________.

• Oasis

• Desert

• Shore

• Wind