Product Details: Item #2310
   Ecosystems: Great Lakes, a Pond, and the Web of Life
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    Description: Three videos, A New England Pond, The Great Lakes Ecosystem and The Web of Life, on one DVD.

    A New England Pond
    Some of the best work in ecology has been done on small fresh water pond ecosystems. This live-action video uses a small New England pond to teach basic concepts in ecosystem science. Food webs are illustrated, the abiotic-producer-consumer-decomposer cycles, problems of acid rain and pond succession are also stressed.

    The Great Lakes Ecosystem
    The largest chain of fresh water lakes in the world has special ecological problems of its own. This live-action video 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.

    The Web of Life
    Explains the concepts used by ecologists today to study ecosystems. Food chains, food webs, cycling of elements, toxic wastes and more.
    Price: $79.95
    Copyright: ©2002
    Format: 1 DVD
    Length:66 minutes
    UPC:69394 0231032
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