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(Click for frequent words.) 71 fumigant methyl bromide 69 pesticide methyl bromide 68 organophosphate insecticides 67 methyl bromide 66 aerosol propellants 66 Paraquat 65 azinphos methyl 65 hydrochlorofluorocarbons HCFCs 64 fumigant 64 ozone depleting substance 64 carbamates 64 sulfuryl fluoride 64 Methyl iodide 64 soil fumigant 63 Chlorofluorocarbons 63 soil fumigants 63 halons 63 chlorofluorocarbons CFC 63 Malathion 62 pesticide endosulfan 62 organophosphate insecticide 62 DDT PCBs 62 deplete ozone 61 Pyrethroids 61 DDVP 61 tributyltin 61 herbicide glyphosate 61 fluorocarbons 61 chlorofluorocarbon CFC 61 synthetic pyrethroids 61 Dichloro Diphenyl Trichloroethane DDT 61 chlorinated hydrocarbon 60 pesticide aldicarb 60 Chlorine dioxide 60 bromine compounds 60 Vikane 60 hydrofluorocarbons HFCs 60 Chlorpyrifos 60 dichlorodiphenyltrichloroethane DDT 60 Carbofuran 60 organochlorine pesticide 60 lindane 60 organochlorine 60 pesticides 60 parathion 60 toxic pesticides 60 hydrochlorofluorocarbon 60 deca BDE 60 Carbon monoxide CO 59 Inert ingredients 59 insecticide DDT 59 octa BDE 59 Methyl Bromide 59 methyl chloroform 59 fungicides herbicides 59 Carbaryl 59 Pyrethrins 59 rat poisons 59 Rotenone 59 CFC propellants 59 Insecticidal soap 59 DDT pesticide banned 59 fluorinated chemicals 59 Sulphur dioxide 59 atrazine herbicide 59 pesticides insecticides 59 Diazinon 58 synthetic insecticides 58 pesticide lindane 58 organophosphate pesticide 58 polybrominated diphenyl ether 58 fumigants 58 Leaded petrol 58 toxaphene 58 CFCs chlorofluorocarbons 58 Guthion 58 toxic fumigant 58 DDT pesticide 58 herbicide atrazine 58 carbamate insecticides 58 fungicides insecticides 58 Bt Bacillus thuringiensis 58 nitrate fertilizers 58 Sodium cyanide 57 halon 57 botanical insecticide 57 persistent bio accumulative 57 CFCs HCFCs 57 nematicides 57 plastics detergents 57 fibrous mineral 57 organophosphate 57 herbicides insecticides fungicides 57 suspected carcinogen 57 pesticide 57 carbon tetrachloride 57 insecticides pesticides 57 Dieldrin 57 perfluorocarbons PFCs 57 Polychlorinated biphenyls PCBs 57 organophosphates 57 methyl bromide fumigation 57 organo phosphate 57 chlorine bleaching 57 chlorinated hydrocarbons 57 chlorinated pesticides 57 Carbon tetrachloride 57 hydrofluorocarbon HFC 57 ozone depleting chlorofluorocarbons CFCs 57 rodenticide 57 organophosphorus pesticides 57 miticides 57 horticultural oils 57 Lindane 57 pesticide carbofuran 57 chlorofluorocarbons CFCs 57 chlorpyrifos 57 aldicarb 57 Atrazine 57 groundwater contaminant 57 dieldrin 57 synthetic nitrogen fertilizers 57 mirex 57 Deca BDE 57 ODSs 57 lung irritant 56 synthetic fertilizers pesticides 56 ozone depleting gases 56 metam sodium 56 Persistent Organic Pollutants POPs 56 CFCs 56 brodifacoum 56 heptachlor 56 ozone depleting chlorofluorocarbons 56 endrin 56 malathion 56 clopyralid 56 triazine herbicides 56 dimethoate 56 HBCD 56 respiratory irritant 56 dichlorodiphenyltrichloroethane 56 chromated copper arsenate CCA 56 penta BDE 56 insecticidal soaps 56 anthrax Bacillus anthracis 56 insecticide spray 56 harmful byproducts 56 insecticide sprays 56 Halons 56 ozone depleting CFCs 56 HCFC #b 56 Dursban 56 neonicotinoid 56 nitrates phosphates 56 MBTE 56 Insecticidal soaps 56 Sugarcane ethanol 56 Aldicarb 56 naturally occurring bacterium 56 Dimilin 56 imazapyr 56 simazine 56 Inorganic arsenic 56 Flame retardants 56 paraquat 56 Hydrochloric 56 dioxins PCBs 56 carcinogenic substance 56 tributyl tin 56 register methyl iodide 56 organochlorine pesticides 56 chlordecone 56 sterilant 56 Aflatoxins 56 tobacco budworm 56 methyl parathion 56 decaBDE 56 toxicant 56 Nitrogen oxide 56 Tailpipe emissions 56 carbaryl 56 insecticide endosulfan 55 Sewage sludge 55 Chlordane 55 pesticides herbicides fungicides 55 pesticide chlorpyrifos 55 paints solvents pesticides 55 trichloroethene TCE 55 mites pesticides 55 endocrine disrupting chemical 55 diazinon malathion 55 acaricide 55 perfluorocarbons 55 bifenthrin 55 nitrogen oxides NOx emissions 55 cellulase enzymes 55 endocrine disrupter 55 chlorine disinfection 55 synthetic pesticides herbicides 55 octane enhancer 55 #,# dichlorobenzene 55 neuro toxin 55 Organophosphates 55 glyphosphate 55 ozone depleting chemicals 55 sugar beet seeds 55 DDT dieldrin 55 insecticides herbicides 55 Anhydrous ammonia 55 polynuclear aromatic hydrocarbons 55 Methylmercury 55 chlorofluorocarbon 55 hormone disrupter 55 degreasing agent 55 pyrethrins 55 nonylphenol ethoxylates 55 nitrogenous compounds 55 Spinosad 55 trichloroethane 55 diazinon 55 Imidacloprid 55 Diesel exhaust 55 synthetic pesticides 55 aminopyralid 55 phosphine 55 Ozone Depleting Substances ODS 55 insecticide malathion 55 chemical fertilizers herbicides 55 asbestosis lung cancer 55 methomyl 55 diphenyl ether 55 strobilurin fungicide 55 vinclozolin 55 Trichloroethylene 55 mimics estrogen 55 ethoxylates 55 genetically engineered organisms 55 gypsy moth larvae 55 Horticultural oils 55 Genetically engineered crops 55 Fumigants 55 Carbon dioxide CO2 55 nitrogen oxides carbon monoxide 55 pyrethrin 55 pyrethroid insecticides 55 fluorinated gases 55 Airplanes sprayed 54 Nemagon 54 Ethylene glycol 54 Carbon monoxide byproduct 54 organochlorines 54 carbofuran 54 American foulbrood 54 soluble fertilizers 54 PAHs polycyclic aromatic hydrocarbons 54 naturally occurring fungus 54 Sorbitol 54 DecaBDE 54 Dibrom 54 Pesticides 54 Dioxane 54 toluene benzene 54 herbicide tolerant soybeans 54 nitrous oxides 54 Glyphosate 54 Chloramines 54 termiticides 54 Aspergillus flavus 54 naturally occurring micro organisms 54 contain oxalic acid 54 insecticides herbicides fungicides 54 Soy isoflavones 54 hydrogen sulphide H2S 54 pesticide azinphos methyl 54 HCFCs 54 amphibole asbestos 54 milky spore 54 phosmet 54 Sulfur compounds 54 hexachlorobenzene HCB 54 soybeans canola 54 Ozone depleting substances 54 ozone depleting 54 ozone depleting substances 54 monocropping 54 gaseous chlorine 54 genetically modified organism GMO 54 retardants 54 deicing fluids propylene glycol 54 pyrethroids 54 nitrous oxide N2O 54 antimycin 54 Rodenticide 54 virginiamycin 54 hexachlorobenzene 54 Nitrates 54 sulfur dioxide pollutant 54 formaldehyde benzene 54 Diethylene glycol 54 organophosphorus 54 Methyl tertiary butyl ether 54 metaldehyde 54 PCBs dioxins 54 pentachlorophenol 54 benzoates 54 organophosphorous 54 Metarhizium 54 Fluoroquinolones 54 Genetically modified organisms 54 clothianidin 54 N2O emissions 54 coddling moth 54 ozone particulates 54 methanol formaldehyde 54 HFC refrigerants 54 Lorsban 54 herbicides insecticides 54 detergents solvents 54 Clostridium bacteria 54 fluorotelomers 54 controlling insect pests 54 pesticide sprays 54 MON# maize 54 mold fungi 54 yellow starthistle 54 Sodium nitrite 54 herbicides pesticides 54 Ethylene oxide 54 polybrominated 54 Endosulfan 54 bacillus thuringiensis 54 Vinyl chloride 54 chrysotile 54 Hydrogen peroxide 54 hydrofluorocarbon 54 Chlorofluorocarbons CFCs 54 Calcium chloride 54 smog forming compounds 54 hazardous solvents 54 western flower thrips 54 BHA BHT 54 aerially sprayed 54 Weedkiller 54 tasteless odorless 53 Particulate pollution 53 Serum phosphorus 53 Genetically modified foods 53 Aspergillus niger 53 oxidizing agent 53 bacteria mold mildew 53 disease fireblight 53 Basamid 53 aluminum phosphide 53 chlortetracycline 53 halogenated compounds 53 PCBs pesticides 53 Methoprene 53 hydro chlorofluorocarbons 53 aromatic amines 53 plant Artemisia annua 53 Formic acid 53 Thimerosal preservative 53 Fungicides 53 acephate 53 spinosad 53 pesticides chlorpyrifos 53 PCBs polychlorinated biphenyls 53 acids solvents 53 fumonisins 53 Foray #B 53 chlorinated compounds 53 oxygenate MTBE 53 bio fertilizers 53 herbicides 53 diphacinone 53 broadleaf weed killer 53 biphenyls PCBs 53 mancozeb 53 aldrin 53 organotin 53 dioxins furans 53 flame retardants PBDEs 53 glycols 53 brominated flame 53 Biodegradable plastics 53 PBDEs polybrominated diphenyl ethers 53 polyester resins alkyd resins 53 Bacillus thuringiensis Bt 53 sulfur oxide SOx 53 insects mites 53 triclopyr 53 tebuthiuron 53 Activated carbon 53 sulfur oxides nitrogen oxides 53 Adenoviruses usually cause 53 carbendazim 53 pest repellents 53 glyphosate Roundup 53 Nitrogen oxides 53 bacterium Pseudomonas 53 Aminopterin 53 insecticide chlorpyrifos 53 Hydrogen sulphide 53 Ricin derived 53 sulfur oxide 53 starthistle 53 Potassium bromate 53 phosphorus pollution 53 Gramoxone 53 Persistent Organic Pollutants 53 TCE PCE 53 prussic acid 53 thiamethoxam 53 phytophthora 53 chlorinated solvents 53 piperonyl butoxide 53 benzyl alcohol 53 industrial degreaser 53 neonicotinoid pesticides 53 Malachite green 53 Sodium bicarbonate 53 bacterium Bacillus thuringiensis 53 toxic solvents 53 bioaccumulative 53 bacterium Clostridium 53 Temik 53 Pasteuria 53 Insect repellents 53 potent carcinogen 53 toxic pollutant 53 nitrogenous fertilizers 53 sulfur dioxide pollution 53 Prussic acid 53 Excess nitrogen 53 methyl iodide 53 Furadan 53 diphenyl ethers 53 Glenn Brank spokesman 53 infestans 53 wood preservative 53 PVC plastics 53 Single hull tankers 53 cancer causer 53 ozone depleting compounds 53 Elemental mercury 52 nonselective herbicide 52 apple maggots 52 Saccharin 52 Endocrine disruptors 52 pesticides synthetic fertilizers 52 Candida infections 52 Synthetic fertilizers 52 COREXIT 52 inorganic fertilizers 52 Epoxy resins 52 hydrochlorofluorocarbons 52 bacterial canker 52 diamondback moth 52 sulfoxide 52 Study Tanning beds 52 foliar application 52 Ozone disinfection produces 52 predatory mites 52 diuron 52 algal species 52 Fipronil 52 Pesticide residues 52 Carbon sequestration 52 iron chelate 52 Dipel 52 fluridone 52 organophosphate OP 52 acids alkalis 52 broadleaved weeds 52 insecticides fungicides 52 chlorinated flame retardants 52 fertilizers herbicides 52 molds fungi 52 Pre emergent herbicides 52 diquat 52 beneficial nematodes 52 Telone 52 VOC Volatile Organic Compounds 52 phosphorous fertilizers 52 Acrylic acid 52 gene spliced foods 52 chlorofluorocarbons 52 pthalates 52 systemic insecticides 52 Avitrol 52 pyrethroid insecticide 52 algaecides 52 Spotted knapweed 52 Water hyacinth 52 unhealthy trans fatty 52 biocide 52 Polybrominated diphenyl ethers PBDEs 52 neonicotinoids 52 agrichar 52 PCBs DDT 52 potassium bicarbonate 52 bactericide 52 metal degreasing 52 nematicide 52 bacteria Bacillus anthracis 52 cyclamates 52 chlorinated solvent 52 fluorochemicals 52 witchweed 52 growth promotants 52 glyphosate herbicides 52 Burkholderia 52 bio accumulative 52 stratospheric ozone depletion 52 polybrominated diphenyl ethers 52 airborne pollutant 52 Methicillin 52 inorganic fertilizer 52 Hydrogen cyanide 52 nitrous oxide emission 52 synthetic pyrethroid 52 indoor wood stoves 52 herbicide Spike #DF 52 perfluorinated compounds 52 virucidal 52 insecticides 52 oxidising agent 52 CheckMate LBAM F 52 Chrysotile asbestos 52 additive MTBE 52 Dear EarthTalk Are 52 bacterial fermentation 52 water soluble fertilizers 52 Nitrogen Oxides 52 termiticide 52 refrigerant gases 52 Nitrosamines 52 Movento 52 ozone depleting CFC 52 pyrethroid 52 fuel additive MTBE 52 insect sprays 52 thermal oxidizers 52 herbicide Atrazine 52 residue cellulosic biomass 52 Herbicides 52 naturally occurring substance 52 synthetic musks 52 Particulate emissions 52 Aerial spraying 52 perfluorinated chemicals 52 carcinogenic byproducts 52 living modified organisms 52 Batrachochytrium dendrobatidis 52 biodegradable nontoxic 52 Nasal irrigation 52 monensin 52 Varroa destructor 52 blister rust 52 NOx nitrogen oxide 52 fungal toxins 52 Botrytis cinerea 52 weedkillers 52 Nitrate contamination 52 Insecticidal 52 nitrofuran 52 Black cohosh 52 CFC refrigerants 52 tributyltin TBT 52 biopesticides 52 parasites fungi 51 artemisinins 51 candida infections 51 Propylene glycol 51 Citric acid 51 cyanoacrylates 51 thymol 51 allergenic proteins 51 M. anisopliae 51 genetically modified organisms GMO 51 insecticide fungicide 51 chemicals diazinon malathion 51 Antibacterial soap 51 organic manures 51 soil solarization 51 transgenic soybeans 51 emamectin benzoate 51 anthelmintics 51 sodium fluoroacetate 51 albuterol inhalers 51 nitrogen fertilizers 51 arsenical 51 hydrocarbons carbon monoxide 51 benzalkonium chloride 51 apple moth 51 deltamethrin 51 alachlor 51 Acrolein 51 larvacides 51 Bromate 51 pesticide atrazine 51 Allicin 51 plastic hardener 51 pesticides herbicides fertilizers 51 EGVM 51 ozone particulate matter 51 monocrotophos 51 estrogen mimicking 51 drywall emits 51 insecticidal properties 51 Nitric acid 51 antifungal agents 51 Seawater desalination 51 particulate matter sulfur dioxide 51 chemical fertilizers pesticides 51 Tetrodotoxin 51 pentaBDE 51 toxic pesticide endosulfan 51 anti microbials 51 herbicidal 51 sterilants 51 carcinogenic mutagenic 51 rodenticides 51 Fusarium wilt 51 sulfur dioxide SOx 51 hydrocyanic acid 51 licensed applicators 51 Hydrogen Sulfide H2S 51 eucalyptol 51 potent neurotoxin 51 metolachlor 51 tetrachloroethene 51 Hydrogen sulfide 51 sumithrin 51 Polychlorinated biphenyls 51 TBBPA 51 reproductive toxicity 51 stem borers 51 #,#,# trichloroethane 51 toxic hydrogen sulfide 51 Chromium VI 51 nonylphenol 51 germicides 51 Tetrachloroethylene 51 Methomyl 51 dietary supplements containing ephedrine 51 wood preservatives 51 benzenes 51 halogenated flame retardants 51 Phosphine 51 Milk thistle 51 trihalomethanes THMs 51 Chlorine bleach 51 solanine 51 Potato blight 51 Halogenated 51 halogenated 51 Silica gel 51 artificial sweetener saccharin 51 Sulfur dioxide 51 ruminant animals 51 3 methylbenzamide 51 chelation therapies 51 Registration Evaluation Authorization 51 castor bean plant 51 Tuta absoluta 51 enrofloxacin 51 Poast Plus 51 Ozone depleting 51 spore forming 51 ramorum 51 benzene formaldehyde 51 chlorine dioxide 51 Glyphosate resistant 51 Carbon dioxide 51 macrolide antibiotic 51 emitting fossil fuels 51 aeruginosa 51 emulsifying agent 51 Particulate matter 51 carcinogenic dioxins 51 chromated copper arsenate 51 pesticide exposures 51 Thoroughly cooking eggs 51 bacterial decomposition 51 Volatile organic compounds 51 hydrocarbons nitrogen oxides 51 oleanolic acid 51 flame retarding 51 soot emitted 51 triclocarban 51 odorless colorless tasteless 51 cyanazine 51 pesticides preservatives 51 salicornia 51 vinyl acetate monomer 51 azadirachtin 51 Streptococcus pneumoniae S. pneumoniae 51 aztreonam 51 Sodium nitrate 51 caterpillar pests 51 BioNeutral antimicrobial formulations 51 endocrine disrupting chemicals EDCs 51 Oxybenzone 51 cetyl 51 Acetic acid 51 chloroflourocarbons 51 microbials 51 Acrylamide 51 Thuricide 51 Limonene 51 antifungal agent 51 dioxides 51 volatilized 51 Toxic chemicals 51 anthrax ricin 51 cryoprotectants 51 diethyl 51 triazine 51 bacterial toxin 51 toxicants 51 Anaerobic digesters 51 Brominated 51 Soybean cyst nematode 51 carcinogens mutagens 51 antibiotic tetracycline 51 Amflora potato 51 HFC #a 51 Boric acid 51 fertilizers insecticides 51 Ascochyta 51 Scorpion venom 51 Foliar 51 synthetic nitrogen fertilizer 51 Roundup Ready seeds 51 fumigations 51 rodent populations 51 chloropicrin 51 crocidolite 51 miticide 51 halocarbons 51 potent carcinogens 51 Italy Novamont SPA 50 Methyl mercury 50 formic acid 50 polyaromatic hydrocarbons 50 sodium lauryl sulphate 50 hormone disruptors 50 particulate matter PM#.# 50 biogenic emissions 50 botulism spores 50 greenhouse gas HFC 50 chemical ammonium perfluorooctanoate 50 corn borer pest 50 reproductive toxicant 50 solvents pesticides 50 elevated atmospheric CO2 50 pyrethroid resistance 50 algal toxins 50 Brackish water 50 Feral swine 50 soluble compounds 50 SOx emissions 50 Inhaled steroids 50 Bacillus thuringiensis var 50 HFA propellant 50 antibiotic residues 50 methyl tert butyl ether 50 spore forming bacteria 50 bacteria Listeria monocytogenes 50 Genetically Modified Organisms GMOs 50 fragrances dyes 50 hydrated lime 50 diesel particulates 50 Propoxur 50 endosulfan 50 Campylobacter bacteria 50 developing Surfactant Therapies 50 Permethrin 50 azo dyes 50 Clostridium Botulinum 50 inorganic salts 50 organophosphate pesticides 50 rodent poisons 50 Chlorinated 50 Baytril 50 Poison hemlock 50 herbicides fungicides 50 Sulphuric acid 50 toxic dioxins 50 potent greenhouse gas 50 nitrofurans 50 johnsongrass 50 particulate emission 50 dimethyl 50 sulphite 50 meta toluamide 50 aflatoxins 50 kurstaki 50 pesticide contamination 50 lampricide 50 chlorofluorocarbon gases 50 Organophosphate pesticides 50 chlorine ammonia 50 Phytophthora infestans 50 Nitrate 50 Hydrogen Sulphide 50 Cryptococcus gattii 50 Varroa mites 50 ethyl mesilate 50 pesticidal 50 Volatile Organic Compounds VOC 50 volatilize 50 greenhouse gas nitrous oxide 50 Deep fryers 50 polychlorinated 50 Chlorination 50 Perchloroethylene 50 nitrogen phosphate potassium 50 soilborne 50 pheromone spray 50 forestry residues 50 BSE prions 50 Pyrethrum 50 Corexit dispersants 50 Domoic acid neurotoxin 50 nitrification inhibitors 50 synthetically manufactured 50 ethylene dichloride EDC 50 vibrio bacteria 50 Ozone Depleting 50 carbamate 50 Bti 50 GMO soy 50 Selectrocide 50 Urushiol 50 oVOCs 50 PLA polymer 50 Genetic modification 50 Arsenic contamination 50 contaminates drinking 50 Sodium hydroxide 50 Parasitic wasps 50 carbaryl Sevin 50 colorless odorless poisonous 50 citri 50 emit sulfur dioxide 50 EtO 50 dioxin TCDD 50 borne pathogens 50 Levamisole 50 pentachlorophenol PCP 50 agrichemicals 50 herbicide paraquat 50 Activated charcoal 50 polybrominated diphenyl ethers PBDEs 50 spores germinate 50 fire retardants 50 molecularly identical 50 European corn borer 50 Humic acid 50 terpenes 50 Histoplasma capsulatum 50 Ozone depletion 50 cocaine alkaloid 50 banned pesticide DDT 50 Polybrominated 50 Saltcedar 50 insecticide 50 Hexavalent chromium 50 degreasing solvent 50 Septoria leaf spot 50 solvents 50 Nitrite 50 reproductive toxicants 50 aphids whiteflies 50 lice shampoos 50 fungal organisms 50 elemental sulfur 50 Dental sealants 50 fungus Aspergillus 50 pathogenic fungus 50 N diethyl m toluamide 50 antibiotic erythromycin 50 Pesticide 50 preventives 50 reproductive toxins 50 Antibiotic resistant bacteria 50 formaldehydes 50 pollutant 50 Helicoverpa armigera 50 Moraxella bovis 50 tutin 50 sodium bromide 50 toxic residues 50 dyes insecticides 50 Methyl Tertiary Butyl Ether 50 Arahuay lone industry 50 carcinogenic chemical 50 naturally occurring algae 50 appleseed sized critters 50 Warmer wetter weather 50 parthenium 50 gingerol 50 DEET picaridin 50 crystalline silica dust 50 hydrofluorocarbons 50 developmental neurotoxicity 50 stain repellents 50 pesticide herbicide 50 allergenic pollen 50 Enviro Log firelogs 50 broadleaf herbicide 50 foliar fertilizers 50 #,# propanediol PDO 50 Antipsychotic medications 50 artemesinin 50 phosphor powder 50 microbial biofilms 50 ethylene oxide 50 PRRS virus 50 Diacetyl 50 Citrus greening 50 fungicidal 50 phosphates nitrates 50 ATryn ® GTC recombinant 50 bug repellents 50 tertiary butyl ether MTBE 50 colorless odorless tasteless 50 antibiotic chloramphenicol 50 environmentally friendly refrigerants 50 Diclofenac 50 alfa interferon 50 herbicide resistant crops 50 phosphorus runoff 50 calcium nitrate 50 nonrenewable fossil fuels 50 Nitrogen oxide emissions 50 human African trypanosomiasis 50 GMO maize 50 ethylene dibromide 50 biogases 50 Bottom trawling 50 coumarin 50 chemical sprays 50 propylene oxide 50 Salmonella spp 50 Organophosphate 50 Propionate 50 bisulfite 50 cotton bollworm 50 tracheal mite 50 absorbs carbon dioxide 50 chemical malachite green 50 Parthenium 49 transgenic varieties 49 black sigatoka 49 sulphate aerosols 49 NK# maize 49 Mechanical ventilation 49 resistant microorganisms 49 herbicide residues 49 TCE trichlorethylene 49 siloxanes 49 chlorine bleaches 49 biotechnologically 49 Volatile Organic Compounds VOCs 49 Amflora potatoes 49 varroa mite 49 foliar sprays 49 phenoxy herbicides 49 Triclosan 49 antibiotic resistant pathogens 49 carcinogenic polycyclic aromatic hydrocarbons 49 #,# DCB 49 cyclamate 49 Rodenticide Act FIFRA 49 microbial decomposition 49 carbon monoxide nitrogen oxide 49 ruminant livestock 49 transgenic seeds 49 HGPs 49 sulfuric compounds 49 inoculants 49 elemental chlorine 49 Chromium picolinate 49 synthetic pheromone 49 aflatoxin B1 49 toxic polychlorinated biphenyls 49 FGD gypsum 49 pyrethroid resistant 49 aerial applicators 49 hydrofluorocarbons HFCs perfluorocarbons PFCs 49 neurotoxin 49 methoprene 49 dioxin PCBs 49 desulfurization gypsum 49 preharvest