The Alps are mountains that serve as a physical boundary between countries in Europe. According the article, the Swiss have created the world’s longest tunnel. How will this new tunnel revolutionize transportation in Europe and overcome this physical barrier?

Which of the following describes what rocks usually are composed of ,

Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory