VII. Read the passage and answer the following questions.

Most people think of deserts as dry, flat areas with little vegetation and little or no rainfall, but his hardly true. Many deserts have varied geographical formations ranging from soft, rolling hills to stark, jagged cliffs, and most deserts have a permanent source of water. Although deserts do not receive a high amount of rainfall - to be classified as a desert, an area must get less than 25 cm of rainfall per year - there are many plants that thrive on only small amounts of water, and deserts are often full of such plants.

1. What causes an area to be classified as a desert?

2. Is it true that deserts are dry and flat areas?

3. What kind of plants can be found in deserts?

4. Is there little vegetation and no rainfall in deserts?

5. Can rolling hills be found in deserts?