- : Compare and contrast point and nonpoint sources of water pollution. Which is easier to treat? Why?
- 2: What is one way natural ecosystems can perform wastewater treatment? Explain.
- 3: Why is it difficult to establish standards for acceptable levels of pollution? Explain, considering physical, climatological, biological, social, and/or ethical reasons
- 4: Why is biomagnification so important to toxicology?
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