Jim Gilbert
Mystery Class Mystery Class

Tracking Changes in Photoperiod Around the Globe

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    • Challenge Question #1

    Joan Berger
    "How do seasonal changes in photoperiod affect your animal's food web?"

    (This question was asked as part of the February 28, 1997 Mystery Class Update).

    How to Respond to Journey North Challenge Question #1

    1. Address an e-mail message to: jn-challenge-mclass@learner.org
    2. In the Subject Line of your message write: Challenge Question #1
    3. In the body of the message, give your school's name and location and answer the question!

    We'll share your ideas and those of other students in future reports. You can also see students'answers to Challenge Questions on Journey North's WWW site.