Bioaccumulation
What is meant by bioaccumulation
Build-up of toxins/chemicals in an organism over time
Where do toxins usually build up in an organism’s body?
Fatty tissues / fat
✔ Liver (allow)
Name one example of a toxin that can bioaccumulate.
Mercury / pesticides / DDT / lead
Water / oxygen
4. Does bioaccumulation happen inside one organism or along a food chain? (1 mark)
Inside one organism
Why do toxins build up over time in an organism?
Toxins are absorbed/ingested (1)
✔ They are not broken down or excreted easily