Exposure pathway, exposure route and duration of exposure play a significant role in determining the response of a perso

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Exposure pathway, exposure route and duration of exposure play a
significant role in determining the response of a person to a given
dose of any chemical or contaminant. Describe the various elements
that constitute an exposure pathway citing examples where necessary
(20 marks).
In this question, you are required to Describe the various
elements. In describing the element, you are expected to provide
sufficient details and not just copy and paste what is in the
lessons. For example, element 1 is contaminant source. To describe
this, you will need to do the following
• Explain what the source is in terms of exposure pathway (1
mk)
• Give examples of contaminant sources (1 mk)
• Provide examples of the types of contaminants that may
originate from at least one of the sources (1 mk) •
Provide a description of some of the factors that influence the
release of contaminants from the source. (1 Mk)
This is just an example of how you describe the specific
element. For the remaining elements, please provide adequate
details.
Elements:
1. The contaminant source or release
2. Environmental fate and transport
3. Exposure point or area
4. Exposure route
5. Potentially exposed populations