Question

If PCBs escaped into the river in large amounts and entered the lower levels

of the food chain, what would be the likely outcome?

Answer 1

Over time, PCBs would collect in top predators such as salmon, making them unsafe for human consumption.

Step-by-step explanation:

PCBs last a long time in the environment before breaking down and may find their way into the food chain. Low levels of PCBs can be found in fish, shellfish, meat, poultry, milk, dairy products, and other foods. Since PCBs have not been made since 1977, the levels in the environment have been declining over the past several years. Predators at or near the top of the food chain (e.g. birds, fish) have the highest levels of PCBs in their bodies.