character: Dr. Lily Waters
topic: Water Retention Techniques in Wetlands
grade: 9
subject: Science
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character: Professor Rainy Green
topic: Ecosystem Health and Hydrology
grade: 9
subject: Science
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character: Mr. Sandy Dunes
topic: Desert Ecosystems and Water Conservation
grade: 9
subject: Science
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character: Dr. Fern Leafy
topic: Forest Ecosystems and Soil Moisture
grade: 9
subject: Science
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