North America is a continent of many natural wonders. It has the longest coastline of any continent in the world at 190,000 miles, including the island of Greenland and the Caribbean islands. It has two of the world’s major mountain ranges: the Appalachians in the east and the Rocky Mountains in the west. North America contains every kind of climate on Earth, from frozen tundra to tropical wetlands. It has sunny beaches and arid deserts. It contains 23 countries, including Canada, the second largest country in area on Earth, the United States, and Mexico.