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How do toxins build up through the food web?

Gallery Bioaccumulation Hero Encounter Edu

Persistent chemicals, like some of the plasticisers used to make plastic water bottles, don’t break down naturally so remain in the environment for a very long time. They get absorbed by organisms at the bottom of the food chains and build up at higher levels. This process is known as bioaccumulation. If the lethal dose is reached, the organisms at the top of the food chain die.

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Plankton Plastics Poo Science 14 16 Thumb

Science | Ages 14-16

Plankton, Plastics and Poo

Plankton, Plastics and Poo Science ages 14-16 is a KS4 teacher resources. Students are introduced to the pioneering research on the impact of microplastics on the marine ecosystem. This resource brings cutting edge science to the classroom.

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