Toxins Building Up in Food Chains

“If your child heard that large fish like tuna can contain more mercury than small fish, could they explain why that is — even though the tuna didn’t encounter mercury directly?”

0 / 4 mastered

• ⬜Defines bioaccumulation and explains why toxins increase in concentration higher up the food chain
• ⬜Gives a real example of bioaccumulation (e.g. DDT in peregrine falcons, mercury in tuna)
• ⬜Explains how organisms can change their habitat (e.g. earthworms aerating soil, beavers creating wetlands)
• ⬜Discusses why top predators are most at risk from bioaccumulation