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Lecture 6

cornell-style notes, lecture 6

2 Pages

Environmental Science
Course Code
Jovan Stefanovic

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Human Health and the Environment Study Notes Lecture 6 Key Points Notes Two types of 1. Background radiation: naturally found in earth radiation and outer space 2. Manmade radiation: electronic products Groups of 1. Ionized radiation radiation 2. Non-ionized radiation Ionized radiation Can change atoms and strip away electrons Break some chemical bonds (e.g alpha, beta particles, gamma and x-ray) Stochastic health effects: Long term: low level exposuredifficult to detect Increased exposure affects likely hood, but not type or severity of effect Cancer: uncontrolled growth of cells, which results in damage at cellular and molecular level. Changes in DNA: mutations: teratogenic = malformation of embryo and gentics
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