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Assessment
What is a primary cause of nutrient pollution in freshwater systems?
Agricultural runoff
Industrial waste
Rainfall
Littering
What nutrient is often found in excess and contributes to algal blooms in freshwater?
Iron
Phosphorus
Calcium
Sodium
How can nutrient pollution affect aquatic ecosystems?
It increases oxygen levels.
It leads to fish deaths due to hypoxia.
It decreases water temperature.
It improves water clarity.
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