character: Pollen
topic: Role of Pollen in Environmental Allergens
grade: 9
subject: Biology
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character: Seasonal Allergies
topic: Causes and Effects of Seasonal Allergies
grade: 9
subject: Biology
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character: Environmental Allergens
topic: Types of Environmental Allergens and Their Impact
grade: 9
subject: Biology
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character: Allergic Reactions
topic: How Allergic Reactions are Triggered by Pollen
grade: 9
subject: Biology
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