Geography 2152F/G Lecture Notes - Lecture 9: Polonium, Coronavirus, I-35W Mississippi River Bridge
28 Nov 2020
School
Department
Course
Professor
Document Summary
Technological hazards: vary from single toxic chemical accident to entire industry. Vulnerability to tech hazards typically, death tolls are low: vulnerability greatest for those involved in industry or transportation sytems, workers in resource industries in hinterlands higher risk. Poisons: conditions that worsen slowly over time as exposure to concentration increase, eventually reach threshold critical to health, situations related to this include exposure to chemicals, acid precipitation, groundwater contamination. Large-scale structures: defined as probability of failure during lifetime of structure. Industry: prob of death/injury per person per number of hours exposed. Genetically modified organisms: organisms that have changes made to their dna by transfer of genes: most common crops modified are corn, soybean, canola. Crops have been genetically engineered to have greater resistance to: Pathways include inhalation, ingestion impact can be direct (within days) or delayed (cancer) impact could also be indirect form of genetic effects. Person may not experience effects but may pass them on to children.
