multiple health and environmental impacts of

The author means water, air, and food:
Clinical and laboratory examination involved 137 children and 99 adults in chronic multi-environmental (ambient air, water, foods) exposure to metals (cadmium and arsenic, HI 1.21-1.29), diagnosed endocrine diseases including lipid metabolism disorders (excessive nutrition and obesity, E67.8-66.0) in adults 1.4 times more, and in children in 1.7-2.2 times more than in the reference group.
https://www.ncbi.nlm.nih.gov/pubmed/30351727
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Exposure Pathways
As stated earlier, an individual may be exposed to ionizing radiation both externally and internally. The
different ways that could result in radiation exposure to an individual are called exposure pathways. Each
type of exposure is discussed separately in the following paragraphs.

https://www.energy.gov/sites/prod/files/EIS-0319-FEIS-02-200...

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The physical and radiological characteristics are important in determining the amount of material released during accidents and the subsequent doses to exposed individuals through multiple environmental exposure pathways.

The radiological risk from transportation accidents would come from the
potential release and dispersal of radioactive material into the environment during an accident and the subsequent exposure of people through multiple exposure pathways (i.e., exposure to contaminated ground or air, or ingestion of contaminated food).

https://www.globalsecurity.org/wmd/library/report/enviro/eis...