{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Bio36_17_EnvHazards - 1 2 3 4 5 6 7 Overview Ch 17...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Overview Ch. 17: Environmental Hazards & Human Health – Long-term trends in pollution – Environment & human health – Pathways of risk – Risk assessment Long-Term Trends in Pollution • Pollution – Presence of a substance that produces undesirable environmental and health effects •Due to chemical composition or quantity •Prevents the functioning of natural processes In the 20 th century – Volumes of pollutants released ↑↑↑ by huge amounts – Shift from gross excesses to microtoxicity – Industrial pollutants shifted from developed to developing countries – Effects shifted from local to global Environment & Human Health • Pollutants – By-products of other activities – Many nonbiodegradable General strategy – Identify cause – Identify source – Clean up – Develop pollution-control strategies – Develop alternatives Environmental Hazards Hazard: anything that can cause – Injury, disease, or death to humans – Damage to personal or public property – Deterioration or destruction of environment • Vulnerability – Some people, especially the poor, are more vulnerable to certain hazards Risk: probability of suffering from hazard – Risk = Hazard x Vulnerability Health WHO: well-being Absence of disease (easier to measure) – Morbidity: incidence of disease in a population – Mortality: incidence of death in a population • Epidemiology – Study of the presence, distribution, & prevention of disease in populations Public Health U.S.: CDC – State & local public-health agencies – Other countries: ministry of health Life expectancy – Universal indicator of health – Gradual increase – Lower in developing countries due to infectious diseases Environmental Hazards Cultural hazards – Risky behaviors Biological hazards – Pathogens 1 2 3 4 5 6 7
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Physical hazards – Natural disasters Chemical hazards – Toxicity Cultural Hazards Influenced by choice – 40% of deaths in U.S.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern