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Assessment
What is one primary source of contaminants affecting freshwater life?
Agricultural runoff
Natural sedimentation
Oxygen depletion
Temperature changes
Which of the following contaminants is known to disrupt endocrine systems in aquatic organisms?
Heavy metals
Plasticizers (e.g., phthalates)
Nutrients (e.g., nitrogen)
Pathogens
What impact can microplastics have on freshwater aquatic organisms?
Enhanced growth rates
Increased reproductive success
Physical blockages and ingestion
Improved water clarity
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