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        4-6

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        Stream Only


        Part of DragonflyTV
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        Water Testing

        This DragonflyTV segment follows a group of students in Queens, NY as they test the health of their local water. After collecting samples, they measure the temperature and test the oxygen and nitrate content of the water. The resulting data tells them how hospitable the water is for fish as well as the overall health of the aquatic ecosystem.

        http://pbskids.org/dragonflytv/

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