Summarize the controversy over the effects of trace levels of chemicals. Why do we know so little about the harmful effects of chemicals? What is the precautionary principle? Explain why the use of...

Summarize the controversy over the effects of trace levels of chemicals. Why do we know so little about the harmful effects of chemicals? What is the precautionary principle? Explain why the use of pollution prevention based on the precautionary principle is controversial. Describe some efforts to apply this principle on national and international levels. What is the Stockholm Convention? What is the Minamata Convention? How did pollution prevention pay off for the 3M Company?