When organisms at each trophic level in a food chain retain all or almost all of the toxic substance ingested in food, ______ occurs.
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Persistent toxic substances, such as dioxin and chlorinated hydrocarbons are dissolved in the fat of organisms and are passed through the food chain as larger organisms consume smaller ones. These persistent toxic substances then accumulate in the tissues of larger organisms because they are not biodegradable: This is an example of what phenomenon? Trophic toxic disruption Biological magnification Eutrophication Global distillation Extinction
Prashant B.
assertion: accumulation of harmful chemicals is maximum in case of organisms at higher trophic level reason :food chain normally do not go beyond 3 or 4 levels
Shalini T.
Persistent bioaccumulative toxins are especially problematic in ecosystems because they increase in concentration through a food chain. Given this ability, you would expect to see the highest concentrations of these chemicals in primary consumers.
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