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Description - Figure 1 - Understanding Human Biomonitoring

This figure shows how a person or population can be exposed to environmental chemicals. Once a chemical is released from its source, it can travel through various types of environmental media to points where human exposure can occur. Air, soil, water, products, and food are the major types of media from which chemical exposure can occur. When a person interacts with or is exposed to these media, chemicals can enter a person's body through ingestion, inhalation, and skin contact.