esrm100s08 - Lesson 8: Environmental Health, Pollution, and...

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Lesson 8: Environmental Health,  Pollution, and Toxicology Big Question: Why Are Even Tiny Amounts of Pollutants a Major Concern?
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Lesson 8 / ESRM 100 / University of Washington Some Basics Volcanic gases spewing from Mt. St Helens adversely affected air quality.
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Lesson 8 / ESRM 100 / University of Washington Terminology •Pollution refers to an unwanted change in the environment  caused by introducing harmful materials or by producing harmful  conditions. •Contamination implies making something unfit for a particular  use through the introduction of undesirable material.  •A toxin is a substance that is poisonous (toxic) to people and  other living things. •Toxicology is the science that studies chemicals that are or could  be toxic. •A carcinogen is a toxin that increases the risk of cancer.
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Lesson 8 / ESRM 100 / University of Washington Synergism Synergism is an important concept. It is the interaction of  different substances, resulting in a combined effect that is greater  than the effects of the separate substances
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Lesson 8 / ESRM 100 / University of Washington How Do Pollutants Get into the Environment? • Point sources • Area sources (also called non-point sources)
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Lesson 8 / ESRM 100 / University of Washington Mobile Sources
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Lesson 8 / ESRM 100 / University of Washington Categories of Pollutants •Infectious agents •Toxic heavy metals •Organic compounds •Thermal pollution •Particulates •Electromagnetic fields •Noise
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/ ESRM 100 / University of Washington Heavy Metals
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esrm100s08 - Lesson 8: Environmental Health, Pollution, and...

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