The Canadian Shield

From 1760 to the federal government, Canada's downstream and upstream villages were pushed into the Canadian shield. In the downstream of Canada, the settlements of the shield are mainly located north of Saguene, St. Maurice Valley, Montreal. Upstream of Canada, it settled in the Ottawa - Huron River heading east from Lake Huron to the Ottawa Valley. The Canadian colonial settlement has a relationship with Canadian shields fluctuating. Shields are obstacles to solving problems until the population increases beyond the limit.

Canadian Shield accounts for a quarter of North America. For hundreds of thousands of years, thick ice of 3.2 kilometers (2 miles) covered a shield of Canada. A moving ice block passes through the material at the top of the ancient rock formations and exposes some of the oldest layers on the planet. When you stand at the oldest part of the Canadian Shield, you are standing directly on a rock formed more than 3.5 billion years ago. North America is the third continent that extends from the Aleutian Islands in the northwest to the Panama Canal in the south. Continental includes the northeastern Greenland. In the extreme, continents extend from all over the world to Greenland and Aleutian Islands. However, in the narrowest part of Panama, the continent is only 50 kilometers (31 miles) away.

North America is a very large continent beyond the cancers of the Arctic and tropical regions. Greenland and Canada's shield are tundra, with average temperatures between 10 and 20 ° C, but the central part of Greenland is made up of very large ice sheets. Tundra spread all over Canada, but the boundary is near the Rocky Mountains (still including Alaska) and the end of the Canadian Shield near the Great Lakes. The western climate of Cascades is said to be mild climate with an average of 20 inches (510 mm) of rainfall. The climate of the California coastal area is called the Mediterranean climate and the average temperature of cities such as San Francisco ranges from 57 to 70 ° F (14 to 21 ° C) per year.