character: Pollution
topic: Impact of Water Pollution on Salt Marsh Health
grade: 9
subject: Geography
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character: Salt Marshes
topic: Importance of Salt Marshes in Coastal Ecosystems
grade: 9
subject: Geography
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character: Water Quality
topic: Factors Affecting Water Quality in Coastal Areas
grade: 9
subject: Geography
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character: Marine Life
topic: Effects of Water Pollution on Marine Biodiversity
grade: 9
subject: Geography
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