E4 Unit 1 Characteristics of deserts and desertification 1.3

1. Desertification is the process of land degradation in arid areas.

• A. True

• B. False

2. Which of the following is NOT a human activity that causes desertification?

• A. Cutting down trees

• B. Drawing out water from wells

• C. Climate change

• D. Overgrazing

3. Desertification is a ___________ phenomenon.

• A. local

• B. global

4. Desertification is the most serious at the ___________ of deserts.

• A. edge

• B. centre

• C. southern part

• D. western part

5. Which of the following continents has the largest desertified area?

• A. Africa

• B. South America

• C. Asia

• D. Europe