character: Mark Robinson
topic: Environmental Scientist focusing on Sedimentation in Freshwater Habitats
grade: 11
subject: Biology
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character: Rachel Carson
topic: Impact of pollutants on freshwater ecosystems
grade: 11
subject: Biology
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character: John Muir
topic: Conservation of freshwater habitats and sediment control
grade: 11
subject: Biology
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character: Jane Goodall
topic: Ecological studies and habitat preservation
grade: 11
subject: Biology
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