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Assessment
What is a major effect of contaminated water on aquatic ecosystems?
Decreased biodiversity
Increased fish populations
Improved water quality
Enhanced aquatic plant growth
Which of the following contaminants is most harmful to freshwater ecosystems?
Nutrients from fertilizers
Plastic debris
Heavy metals
Sediments
How can contaminated water affect the food chain in an ecosystem?
It can lead to the introduction of new species.
It can cause bioaccumulation of toxins.
It increases the numbers of top predators.
It improves nutrient cycling.
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