| A | B |
|---|
| The climate throughout most of the continental United States is | temperate |
| In the United States, population density is likely to be highest in | urban areas |
| During the 1800s and early 1900s, U.S. industries | created air and water pollution. |
| Which region of the U.S. has maritime climate? | West |
| Which climate does Colorado consist mostly of? | semiarid and continental cool summer |
| The growth of U.S. towns and cities in the 1800s and early 1900s often related to | how close a region was to natural resources. |
| Some ways our government is trying to minimize the impact of our large population on the environment may include | managing forests, cutting the use of natural resources and requiring pollution cleanup laws. |
| How many states are in the "continental United States?" | forty eight |
| The approximate square mileage of the United States is | 3.7 million |
