Context: Conventional bleaching of wood pulp using elemental chlorine produces and releases into the environment large amounts of chlorinated organic compounds, including chlorinated dioxins. Dioxins are recognized as a persistent environmental pollutant, regulated internationally by the Stockholm Convention on Persistent Organic Pollutants. Dioxins are highly toxic, and health effects on humans include reproductive, developmental, immune and hormonal problems. They are known to be carcinogenic. Over 90% of human exposure is through food, primarily meat, dairy, fish and shellfish, as dioxins accumulate in the food chain in the fatty tissue of animals.

Question: What process of papermaking is most heavily linked to the pollution?
Answer: bleaching

Question: How are humans commonly exposed to the byproducts of the bleaching process?
Answer: through food

Question: Where are dioxins stored in our animal sources of food?
Answer: fatty tissue

Question: What agency internationally regulates dioxins?
Answer: the Stockholm Convention on Persistent Organic Pollutants

Question: What does bleaching of meat release into the environment?
Answer: Unanswerable

Question: What does bleaching of dairy release into the environment?
Answer: Unanswerable

Question: What does bleaching of fish release into the environment?
Answer: Unanswerable

Question: Which agency nationally regulates dioxins?
Answer: Unanswerable

Question: What process of papermaking is least heavily linked to the pollution?
Answer: Unanswerable

Question: How are humans uncommonly exposed to the byproducts of the bleaching process?
Answer: Unanswerable

Question:  Where are dioxins expelled in our animal sources of food?
Answer: Unanswerable

Question:  What agency nationally regulates dioxins?
Answer: Unanswerable