The Earth's geosphere is made up of iron, oxygen, magnesium, and silicon. All of these elements are chalcogens, or chemical elements.
The following which would best categorize Canada's population is concentrated in the south. The three big cities are actually all within under a five-hour distance from the border of the United States (Montreal, Toronto and Vancouver). Cities in Canada are often concentrated in the southern part, because the further north you go, the colder it gets and the cold can often be quite brutal in Northern Canada.
Over 2/3 of the argicultural land is used
