Biosolids, a byproduct of sewage sludge, are nutrient-rich materials used to fertilize crops. Despite boosting yields, the often pungent-smelling sludge may contain toxic metals and pathogens. Should it still be used?

a. Yes; this practice conserves landfill space and is an efficient use of resources.
b. Yes, but only if the biosolids are tested prior to application.
c. No; biosolids create an unnecessary risk when synthetic fertilizers that are safe can be used instead.
d. I’m not sure. I would need more information before making a decision.


A, B, C, D

Environmental & Atmospheric Sciences

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