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Monday, May 2, 2011

MERCURY POISONING

The major source of mercury is the natural degassing of the earth's crust.

BUILDING SICKNESS SYNDROME

This benign syndrome occurs in workers in modern air conditioned offices.

POLYCHLORINATED BIPHENYLS

Poly chlorinated biphenyls are (PCBs) are liquid, first manufactured in the 1930s, Which have become widely distributed in the environment; particularly in water, fish and fish-eating birds; and in soils near sources of contamination.

FLUROSIS

Skeletal flurosis occurs endemically in some tropical and sub-tropical areas with high fluoride concentrations in soil and water.

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