Canada is a very large country, with land areas located in various climatic and terrestrial regions, thus having many ecozones that differ from each other. Canada's most populous ecozone is the Mixedwood Plains; the ecozone we are in, named for the area's native mixed forests. The Mixedwood Plains is one of Canada's smallest ecozones, spanning just 175,963 square kilometers. The mixed forest plains are bordered by three of the large lakes on the south side of the ecozone and extend along the St. Lawrence River to southern Quebec and occupy the tip of Ontario. It features rolling plains and small rock formations and escarpments. The Mixedwood Plains are home to more than half of Canada's population, as they are home to some of Canada's largest cities, including Toronto, Ottawa, Montreal, and Windsor. The mixed forest plains have a relatively temperate climate with summers averaging between 18°C ​​and 22°C and winters ranging from -3°C to -110°C.[2] Mammals native to the ecozone include black, brown and grizzly bears, gray wolves, coyotes and foxes, raccoons, squirrels and other small mammals. Avian species include the brown sparrow, hawks, ravens, cardinals and blue jays. The fish are bass, trout, carp and pike. Mixedwood Plains are approximately 40% water and contain more than 20% of the world's fresh water. One of the major problems facing the world today is the shortage of fresh water. Because we have ample supplies, we don't notice it, but much of the world is running out of water. There are more water resources, but one of the most important is quickly polluted and populated by invasive species. Pollution is something we create. It was man who created it. We pollute our air and, above all, our water. The great lakes are an o...... middle of paper ......reversible. Humanity should not need prodding to act on problems as serious as those in the Great Lakes. Works Cited[1] “Mixedwood Plains.” Canadian ecozones. Toronto: np, nd N. pag. TDSB Online Library School Sites. Internet. December 13, 2013. .[2] “Mixed forest plains”. Ecozones of Canada: Mixedwood Plains Ecozone. Environment Canada, nd Web. December 13, 2013. .[3] Great Lakes Alliance. Great Lakes Alliance, 2002-2003. Internet. December 15, 2013. [4] B., Laura, Ms. “Minnesota Pollution Control Agency Releases Green Chemistry Case Studies.” Regional Roundtable on Great Lakes Pollution Prevention. GLRPPR, December 12, 2013. Web. December 15. 2013. .