Question

If the concentration of DDT was 0.2ppm in water of a lake what would be its likely concentration in fish in the following food chain ?
Plankton—> fish —>fish eating birds

Answer 1

water (0.02 ppm) - phytoplankton 5 ppm - fish 240 ppm - fish eating birds 1600 ppm

the amount pf DDT increases with increse in the trophic level