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The Great Lakes Ecosystem

The largest chain of fresh water lakes in the world has special ecological problems of its own. This live-action program explains some of the challenges today. Stressed are the sea lamprey, toxic wastes in the lakes, the coming of the zebra mussel and the ruffe fish. Also available as Part 3 of The Great Lakes.

Closed Captioned. 2005. Upper elementary, Secondary.

#952 The Great Lakes Ecosystem, 1 live-action video (23 min.), guide ... Liquidation Sale Price (9 copies) $8.90 each $ 8.90 Add Item to Cart

Would you like DVDs instead?

981-DVD Ecosystems in Action 2:

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