Product Details: Item #2304
   The Biosphere: Then and Now
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    Description: Global warming, ozone depletion and acid rain all make headlines and the evening news. In order to understand these and other global environmental problems, students need to understand what biologists call the biosphere.

    Part 1. A Brief History of the Biosphere. How did the biosphere come to be? Traces the history of four billion years of the growth of the atmosphere and of changing life on planet earth.

    Part 2. The Biosphere Today. Gives the student a clear, dramatic picture of the scientific concepts needed to understand the biosphere today.
    Price: $59.95
    Copyright: ©2007
    Format: 1 DVD
    Length:39 minutes
    UPC:69394 0230431
    Study Guides: Study Guide Questions
    Study Guide Answers
    Special Features:
    An interactive DVD with added questions and quizzes. Subtitled.

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