Selectone of the following major contaminants as the topic of this assignment:benzeneleadchromiummercuryarsenicWrite a 700- to 1,050-word paper addressing the following regarding your chosen contaminant:The contaminantThe sources of the contaminantPhysical properties of the contaminantThe routes of exposure–absorption–for the contaminantThe pathway of distribution–transport–for the contaminantThe uptake of your contaminant across the cell wall or membrane