AluminumClassification of toxicantLight metal.SourcesEarth crust and dissolved waterLocation in the house or roomAluminum is found in beverage cans, pots and roofing.Effects on plants and humanAluminum causes stunted growth in plants and inhibits metabolism.Aluminum contains carcinogenic substances which cause cancer in human beings.Route of exposureAluminum dissolves in water which affects both plants and human. The aluminum dust also when inhaled affect the respiratory system.DistributionAluminum is transport in the form of a solvent in water or dust particles in air.EliminationCreating awareness of material made of aluminum and roofing using material without aluminum metalMercuryClassification of toxicantInorganic substance and harmful solventSourcesMicroscopic organism in water and metals containing mercuryLocation in houseUsed batteries and skin lightening creamsEffect on plants and animalsMercury in water affects aquatic lifeRoutes of exposureDissolves in watersDistributionMercury vapor is carried by polluted air and mixes with rain waterToxic responseInhalation cause memory loss and insomniaEliminationBanning of substance containing mercuryAmmoniaClassification of toxicantInorganic substance and occurs naturallySourcesBacteria in the intestines of animals produce ammoniaIndustrial cleanersAnimal wasteLocation in houseWindow cleaning productsEffect on plants and humansAmmonia contains nitrogen which is essential for plants.Affects respiratory tract and causes throat irritationRoutes of exposureDissolves and easily mix with water and airDistributionMix with water and airToxic responseIrritation of the eyes and lungsEliminationProper ventilationManure managementTolueneClassification of toxicantHydrocarbon and volatile compoundSourcesCrude oil and tolu tree (Irwin, 1997).Location in housePaints and finger nail polishEffect on plants and humansImpaired immune function in animalsRespiratory problems in humansAffect the growth of plant cellsRoutes of exposureEmission of burning gasoline and crude fuelsDistributionPollute airToxic responseDecrease in pulse rateMild eye and throat irritationEliminationUsing of alternative clean energy sourcesBenzene Classification of toxicantHydrocarbonSourcesPesticides, rubbers and dyesLocation in housePlastic materialsEffect on plants and humansDecrease in red blood cells leading to anemiaSlow the growth of plants when they are exposed to the soil.Routes of exposureEvaporates in the air and dissolve in waterDistributionNatural processes like volcanicity and human activities like smoking cigarette.Toxic responseDelayed growth in plantsEliminationBarring spillage of substances containing benzeneLeadClassification of toxicantInorganic substancesSourcesNaturally occurringLocation in houseBatteries (Francis, 1994)Effect on plants and humansInhibits photosynthesisIncreased risk of blood pressureRoutes of exposureBurning of fossil fuelsDistributionManufacturing of batteries and metal productsToxic responseConstipation and memory loss in humanEliminationBanning of production of lead containing productsChromiumClassification of toxicantInorganic substanceSourcesNaturally occurring in rocks, volcanic dust and gasesLocation in houseDyes and wood preservingEffect on plants and humansStomach upset and low sugar in humansRoutes of exposureIt dissolves in water and soilDistributionUsed in making steel, plating and making of dyesToxic responseIrregular heart rhythmEliminationRegulation on the use of chromium in manufacturingArsenicClassification of toxicantInorganic substance and pesticideSourcesNaturally occurring in the earth crustLocation in houseCopper chromate arsenic lumberEffect on plants and humansPoisoning which lead to headache and drowsinessInhibits absorption of minerals by plants in the soilRoutes of exposureCombines with oxygen in the air and soilDistributionIndustrial manufacturingToxic responseSevere diarrheaEliminationRegulation on production of products contain arsenic materialsFormaldehydeClassification of toxicantVolatile organic compoundSourcesNaturally occurringLocation in houseFertilizer and plywoodEffect on plants and humansWatery eyes and burning sensationsHardly affect plantsRoutes of exposureCombines with airDistributionPreservatives in foods and medicineToxic responseCoughing and skin irritationEliminationAvoiding its use as a preservativeCadmiumClassification of toxicantInorganic substanceSourcesNatural element in the earth crustLocation in houseBatteries and plasticsEffect on plants and humansAffects the kidneyRoutes of exposureUse of products with metal coated with cadmiumDistributionUsed in manufacturing of products such as plasticsToxic responseHypertension in humansEliminationBanning its use in manufacturingReferencesIRWIN, R., VAN MOUWERIK, M. A. R. K., STEVENS, L., SEESE, M. D., & BASHAM, W. (1997). Environmental contaminants encyclopedia asphalt entry.Francis, B. M. (1994). Toxic substances in the environment. John Wiley and Sons, Inc..