1. characterize the physical-chemical properties of environmental contaminants related to their behavior in the environment
2. assess the advantage and disadvantages of toxicology compared with epidemiology as sources of information about the human health effects of environmental chemicals
3 describe the assumptions associated with estimating absorbed and biological effective doses.
Environmental contaminants are chemicals that accidentally enter the environment as a result of human activities. Some of these may have been manufactured for industrial use. They are very stable and don't break down easily. If released into the environment these mat enter into the food chain. Other contaminants are naturally occurring chemicals but industrial activities may increase their mobility or increase the amount available to circulate in the environment , allowing them to enter into the food chain at higher level
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