Top-performer

Select one of the following major contaminants as the topic of this assignment:

• benzene
• lead
• chromium
• mercury
• arsenic

Write a 700- to 1,050-word paper addressing the following regarding your chosen contaminant:

• The contaminant
• The sources of the contaminant
• Physical properties of the contaminant
• The routes of exposure--absorption--for the contaminant
• The pathway of distribution--transport--for the contaminant
• The uptake of your contaminant across the cell wall or membrane