The Natural History of A Changing RegioneBook - 2007
Five immense lakes - remembered by school children with the mnemonic "HOMES," for Huron, Ontario, Michigan, Erie and Superior - lie at the heart of North America. They cover an area of nearly 245,000 square kilometres (95,000 square miles) and hold more than 23,000 cubic kilometres (5,500 cubic miles of water). Together they comprise the world's largest freshwater system, containing 95 percent of the continent's fresh water - and one-fifth of the planet's total supply. The Great Lakes' drainage basin - the land through which rivers flow as they empty into the lakes - is more than a r.
Publisher: Vancouver ; Berkeley : Greystone Books, 2007
Edition: 1st pbk. ed
Characteristics: 1 online resource : illustrations (chiefly color), color maps