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Why do fish at the top level of the food chain have higher concentrations of methylmercury than fish in lower levels?
Wiki User
∙ 12y ago
I was actually wondering that myself.
Wiki User
∙ 12y ago
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What is the process concentrations of harmful substances increase in organisms at higher tropic levels in a food chain known as?
biological magnification -teddybearr
What is the process where pollution levels increase through the food chain?
increase in concentration of a pollutant from one link in a food chain to another. Biomagnification is the bioaccumulation of a substance up the food chain by transfer of residues of the substance in smaller organisms that are food for larger organisms in the chain. It generally refers to the sequence of processes that results in higher concentrations in organisms at higher levels in Biomagnification: the food chain (at higher trophic levels). These processes result in an organism having higher concentrations of a substance than is present in the organism's food. Biomagnification can result in higher concentrations of the substance than would be expected if water were the only exposure mechanism. Accumulation of a substance only through contact with water is known as bioconcentration..
What is the causes of biomagnifiction?
Biomagnification: increase in concentration of a pollutant from one link in a food chain to another. Biomagnification is the bioaccumulation of a substance up the food chain by transfer of residues of the substance in smaller organisms that are food for larger organisms in the chain. It generally refers to the sequence of processes that results in higher concentrations in organisms at higher levels in the food chain (at higher trophic levels). These processes result in an organism having higher concentrations of a substance than is present in the organism's food. Biomagnification can result in higher concentrations of the substance than would be expected if water were the only exposure mechanism. Accumulation of a substance only through contact with water is known as bioconcentration..good Luck
When poisons build up in higher levels in a food chain what terms is used?
Biomagnification
How does the NCO support channel function at the battalion and higher levels?
It functions as the communication and supervision chain.
All food chains show that the matter and energy in a food chain?
Decrease in higher levels.
Why are some pollutants more harmful to organisms at higher trophic levels?
Higher trophic levels are animals that are higher up on the food chain. When animals lower on the food chain get effected by pollutants, it transfers to the animal that eats that one. And so on. So the animals on the higher trophic level eat the most animals(animals with the pollutants).
Explain the reason that eating lower on a food chain provides more food energy that eating higher on the food chain?
Biomass refers to the food available for the next trophic level in a food chain. There is a higher biomass on the lower levels of the food chain, hence eating on those levels would provide more food energy.
What impact does chain migration have to urban areas in the US?
The impact is chain migration has is creating higher concentrations of wealth in certain cities, thus the strain of certain resources in these already congested areas. Therefore, rules and regulations are needed to prevent this.
How does pesticide residue become more built up as the food chain increases in terms of biomass?
Pesticides increase in higher trophic levels due to Bilogical magnification .
Why must animals high on the food chain eat many organisms at lower levels?
It is important for an organism to belong to a lower trophic level because the lower levels receive more energy for their food. Organisms on the higher levels also rely on all the lower levels.
Why does osprey contain large amounts of DDT?
DDT concentration is higher in ospreys because they eat the animals that have concentrations of DDT in it. As DDT passes up the food chain it gets more and more concentrated. THis is due to the 10% rule. wiki it.
