paper

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

• benzene
• lead
• chromium
• mercury
• arsenic

Write a 1000- to 1,150-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