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2. A 40 yr old man has developed some dermatologic issues over the past 3 years along with hepatic enlargement, lack of coagulation factors, increases in liver enzymes. He states he sometimes feels "confused". His CBC indicates a pancytopenia and his blood smear displays some basophilic stippling. He also notes that he sometimes experiences nausea accompanied by abdominal pains. Further patient history: man has lived in the same town for 20 yrs, worked at the same job in a wood processing plant since he was 25 and lives on a rural farm. Indicate which trace element might be responsible for this man's condition and why. ( 5 pts)