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    Bridge: Online Ocean Science Education Resource Center
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    In this data analysis and environmental science activity, learners examine the effects of pollution on amphipods using data from the Chesapeake Ecotox Research Program. Learners calculate the...

    $1 - $5 per student Ages 14 - 18 45 to 60 minutes
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    BioEd
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    In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients. Learners investigate, on a small scale, the changes that...

    $5 - $10 per group Ages 8 - 14 1 to 7 days
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    NOAA
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    In this activity, learners model estuaries, artificially enriching both fresh and salt water samples with different amounts of nutrients and observing the growth of algae over several weeks....

    $5 - $10 per group Ages 14 - 18 1 to 4 weeks