User:PacCore1/Central Valley groundwater pollution/PeterTruong04 Peer Review

I think you can add some extra information explaining, how those metals produce toxins to humans and animals. Like what causes the danger, what is harmful? Maybe some more like scientific explanation. That would make it much better. Other than that, you did great, I like it.

General info

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 * Link to the current version of the article (if it exists)
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Evaluate the drafted changes
(Compose a detailed peer review here, considering each of the key aspects listed above if it is relevant. Consider the guiding questions, and check out the examples of what feedback looks like.)