Read the passage: 'Wetland restoration along agricultural river channels creates natural buffer zones where riparian vegetation absorbs excess nitrates and phosphorus, preventing eutrophication in downstream lakes.' What ecological benefit do these restored wetlands provide?
Answer and explanation
Correct answer: D. Filtering nutrient runoff to protect downstream aquatic ecosystems
- Step 1: Riparian wetland plants absorb nitrates and phosphorus, protecting downstream waters from toxic algal blooms. Step 2. Select filtering nutrient runoff to protect downstream ecosystems. Answer: Filtering nutrient runoff to protect downstream aquatic ecosystems. Why not the others: Discharge is regulated rather than accelerated; biological life is supported, not removed; concrete canals are the antithesis of natural restoration.
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