0
The organisms at thetop of the food chain will contain the most DDT. These are the top carnivores (or humans if we are in the food chain).
DDT builds up in food chains for several reasons:
1) It is a persistent pesticide IE: it is difficult for any organisms to break it down, it is non-biodegradable.
2) It is soluble in fat, so it enters the fat storage tissue (adipose tissue) and stays there.
3) Organisms higher in the food chain consume DDT every time they feed on organisms lower down in the food chain, if they are contaminated with DDT.
4) The biomass at each level in a food chain gets less, so the concentration of DDT will increase.
The increase in concentration of pesticides in a food chain is called bio-magnification.
Additional Information: Seals, Predatory Fish, Bears, Predatory Birds, Bats.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoTertiary/Quaternary Predators (apex predators) are most strongly affected; otherwise every organism accumulates some eventually
but Brown pelicans were the most strongly affected in the 195/60s, even though the US gov. focused more on the bald eagles because it was their national symbol
Wiki User
∙ 11y agothe organisms at the top of the food chain
Wiki User
∙ 7y agoDDT is a strong insecticide; the chemical formula of DDT is C14H9Cl5.
Add your answer:
Earn +20 pts
What human activity promotes the evolution of organisms that are resistant to certain chemical?
The use of antibiotics and pesticides.
Are chemicals intended to kill insects and other organisms that damage crops?
Yes, these chemicals are called pesticides.
What type of chemicals do exterminators use?
Exterminators use a variety of chemicals to deal with pests. One of the most common is Diazinon, which quickly poisons most living organisms. A list of pesticides may be found at regulatory agencies such as the EPA.
Do natural or synthetic pesticides last longer?
Normally synthetic pesticides have a longer residual period. Most natural pesticides breakdown within 5 to 7 days - making them a safer option to the environment
What might happen if Bt corn affects non-target organisms such as beneficial insects or harmless insects?
Corn that has been sprayed with pesticides can be a problem. The pesticide can kill non target organisms that are actually beneficial.
What organisms will be affected if small insects and crickets and earthworms are killed by pesticides?
Robins are the organisms that would be most affected if pesticides killed crickets, earthworms and small insects. These are the robins' only food sources, so the robins' survival depends on their abundance.
What chemicals that kill crop-destroying organisms?
pesticides
What are chemicals that kill crop-destroying organisms?
pesticides
What percent of all pesticides never reach target organisms?
Up to 90%
Chemicals intended to kill insects and other organisms that damage crops are called?
PESTICIDES
Which use of pesticides is most dangerous for humans?
spreading pesticides with airplanes
Pesticides are helpful for increasing the food supply . which use of pesticides is most dangerous for humans?
spreading pesticides with airplanes
Do we need pesticides?
Yes, I believe we do need pesticides. A pesticide is a substance used for destroying insects or other organisms which are harmful to plants and animals. Without pesticides some foods will not be able to grow and most countries would then, as a result, starve to death. If the pesticides were not there to use with animals, I am sure some species of animal would face extinction. I guess pesticides help prevent poverty, in a way. Without it, I am sure that we would soon suffer the consequences.
What human activity promotes the evolution of organisms that are resistant to certain chemical?
The use of antibiotics and pesticides.
What are Bio pesticides?
Bio-pesticides are pesticides that only contain natural materials rather than chemicals found in most other forms. Essentially they are environmently-friendly pesticides.
Which plants had the most requirements for fertilizers and pesticides native or non native?
native plants had most requirements of fertilizers and pesticides.
Easy points of avdvantages and disadvantages of pesticides?
pesticides poison pests, but they can also poison other living organisms, or those who eat poisoned organism etc. also, farmers who don't use pesticides can sell their produce for more money as it is organic.
