character: Dr. Eco
topic: Bioremediation Basics
grade: 10
subject: Science
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character: Benny Bacterium
topic: Using Bacteria to Clean Contaminated Water
grade: 10
subject: Science
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character: Pollution Patty
topic: Environmental Impact of Contaminated Water
grade: 10
subject: Science
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character: Science Sam
topic: Microbial Processes in Water Treatment
grade: 10
subject: Science
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