| Item Description: | In Freshwater Ecosystems, students will explore habitats and learn about the biotic and abiotic factors that make up these ecosystems. A hands-on experiment shows students how to test the amount of dissolved oxygen in two different bodies of water, while a visit with a freshwater naturalist examines the importance of wetlands around the world |
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| Physical Description: | 1 videocassette (23 min.): sd., col.; 1/2 in. +. |
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| Production Credits: | Executive producers, Andrew Schlessinger, Tracy Mitchell |
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| ISBN: | 1572254025 (vol.4) |
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