Geography 2011A/B Lecture Notes - Lecture 6: Dieldrin, Bioaccumulation, Smog
8 Apr 2015
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We don"t have to buy it: water is very common in canada compared to other countries, we have lots of it and therefore lose sight of its value, we value land much more than water, we ignore water except when we have too much of it (ie. floods or droughts), a great lake is a lake over 500km2, there are 250 great lakes world wide (cid:224) 1/3 of the great lakes are in canada, the laurentian (called laurentian because they come from where the laurentian ice sheet was) The wisconsin period: began 70,000 years ago, ice picked up clay, sand, gravel, boulders, as the ice melted it moved and shaped the landscape, withdrew 14,000 and 15,000 years ago, massive meltwater = the ancestral lakes, clay, sand, gravel and boulders formed hills, ridges and moraines. Lake huron bay o o o o o: usa (south shore) is less urbanized and not intensively farmed.
