A cornfield was sprayed with DDT (a nonbiodegradable pesticide)?
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The answer is (D) the hawk.\n\nThe concept you are asking about is called biological magnification.  As energy flows through the food chain, there is significantly less energy available to each trophic level.  To accommodate, the organisms must eat a higher biomass from the trophic level below it.  Therefore, each level of the food chain accumulates higher amounts of DDT in their system.  Because the hawk is the third-order consumer in the example provided, it will have the highest concentration of DDT.\n\n<edited for spelling>
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Non-biodegradeable means that when you throw something out, it does not fall apart on its own in nature (like a napkin or paper gets mushy and breaks apart when wet, or how food rots).\n\nThis is a problem because all this waste accumulates or builds up. Thus more and more space is needed to bury it. Alternatives to placing it in the ground is burning it, and this is bad because it releases chemicals into the air that can harm the environment and people.\n\nBest solution is to recycle plastic, that is people shred it or melt it and reuse it. Other uses are to take plastic bags and mix it with glue and wood and make a new type of wood that is very resistant to water damage. This type of wood is used alot now in lawn furniture and porches.
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A simplistic answer is this: organic farming uses growing techniques that do not involve the use of pesticides.
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Specifically:\n\nEnvironmentally hazardous substance, liquid, n.o.s.\ncontains Dibutylphthalate and Bisphenol A Epoxy Resin
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An organochloride is an organic compound containing at least one covalently bonded chlorine atom. Their wide structural variety and divergent chemical properties lead to a broad range of uses.\n\nThe simplest form of organochlorides are chlorinated hydrocarbons. These consist of simple hydrocarbons in which one or more hydrogen atoms have been replaced with chlorine. Most low molecular weight chlorinated hydrocarbons such as chloroform, dichloromethane, dichloroethene and trichloroethane are useful as solvents.\n\nMany organochlorides have significant biological activities. For example, many powerful and effective insecticides are organochlorides. Common examples include dioxin, DDT, dicofol, heptachlor, endosulfan, chlordane, mirex and pentachlorophenol.\n\nPolychlorinated biphenyls were once commonly used electrical insulators and heat transfer agents. Their use has generally been phased out due to health concerns.\n\nChlorinated alkenes are useful monomers used in the preparation of a variety of materials. For example, vinyl chloride is polymerized to form the plastic polyvinyl chloride (PVC).\n\nMany organochlorides have significant toxicity. Insecticides such as dioxin and DDT are persistent organic pollutants which pose dangers to the environment. Chlorinated solvents, when not handled and disposed of properly, present problems with groundwater pollution. Some organochlorides such as phosgene have even been used as Chemical warfare agents. However, the presence of chlorine in an organic compound, does not insure toxicity. Some organochlorides are safe enough for consumption in foods, such as the sweetener sucralose (Splenda).\n\n\n\nSplenda
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Agricultural run-off\nBeavers (very dirty animal) or other infectious or unsanitary creatures.\nChemical spill/run-off\nnoxious substances in an en route stream
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No, but there is a chemical called 2,4,5-trichlorophenoxyethanoic acid which is listed as a noxious chemical and is used as a herbicide.
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If you want information go to \n\nhttp://www.epa.gov/ebtpages/pollchemicalspolychlorinatedbiphenylspcbs.html\n\nAs stated, you should not handle samples of PCBs.
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Fungicides and pesticides are used.  Although not part of petroleum, they are probably made in a series of steps from a petroleum base.  Almost all synthesised organic compounds are made from petroleum feeds.
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That depends on whether you want its shelf life or its half life in application. Shelf life for most pesticide formulations, if stored according to manufacturer's instructions, is about 2 years. Diazinon is a bit different - its breakdown product is MORE toxic than the original molecule (higher mammalian toxicity!). The problem is that you don't know how much has degraded without analysis - so be skeptical about anything older than 2 years. As for half life in application : about 4 days on plant.
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pesticide analysis is usually done either by GC or HPLC.
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Depends how contaminated, contaminated w/ what and how much soil. \n\nMost counties have ag agents so start there and ask. Also soil testing is common for house building so call a local realtor or developer if you can't find one in the phone book.
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My father manufactured the active ingredient in agent orange,(C-5,6), at Hooker Chemical's Montague Michigan plant for the duration of the Vietnam War. The process was so volatile and so toxic that it had to be manufactured on a seven story wall-less superstructure in the middle of a 160 acre field. All of the production was then loaded on railway tankcars for shippment to Dow Chemical of Midland Mi.for addition of solvents and packaging for shipment to the military. At the close of the war, the superstructure was dismantled, and it, and all associated equipment, tools etc. were buried in a huge clay lined disposal pit on the site. The site remains a Toxic hot spot to this day and all of the surrounding neighborhood has water piped into them as the groundwater is highly contaminated. From '82-'93 my father ran a chlorine plant's maintainence department on the persian gulf, about 25 kliks from Kuwait City in Saudi. In 1997 he fell ill with the small cell cancer that has become consistent, though unrecognized by our government, as due to exposure to AO or its components. I know this as I was a service officer for the Am Legion Post here in my  town, and have seen the wreckage that this stuff left in its wake. I am an Non Combatant, US Navy, Vietnam Era vet, ( Commonly refferred to as a "rear echelon puke" ), who salutes and thanks you for your service. Hope you are well, and look forward to your Photo posts as you are quite knowledgeable on the subject. God Bless, Jed
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dichlorodiphenyltrichloroethane     -2,2-bis(p-chlorophenyl)-1,1,1,-trichloroethane, chlorinated hydrocarbon compound used as an insecticide toxic to humans and animals when swallowed or absorbed through the skin.
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you mean rubber, right?\nummm, what about the kind made of corn? it's biodegradable
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Too many chemicals in food chain and atmosphere. PEsticides, stress, later childbirth, teflon on cooking utensils, chenoble, fluoride, pension doubts, tv, microwaves, bad vides, mobile phones, life!
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it happened in 1962 as a defoliant it was not just agent orange theirs several different colors. it has a half life of 10 years which means you can be contaminated in 10 years.the rice supply in japan was also contaminated too.i believe spraying stopped in 1975.they also came outwith super orange