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Pollution (Air (Major Air pollutants & sources, Photochemical Smog…
Pollution
Air
Major Air pollutants & sources
Photochemical Smog & Acid Rain
Pollution control measures
Stratospheric Ozone Depletion
Indoor Air pollution
Water
Wastewater from populations
Point vs. non-point source
= Point is exact location where pollution is produced, whereas non-point is a diffuse area that creates pollution
Biochemical Oxygen Demand (BOD)
- amount of time oxygen a quantity of water uses over a period of time at specific temperature (Dead zone- area with low oxygen concentration)
Eutrophication
- a phenomenon in which a body of water becomes rich in nutrients
Indicator Species
- species indicates whether or not a disease-causing pathogens are likely to be present (Example= Fecal Coliform Bacteria)
Leach field
- underground pipes laid out below the ground, connected to a septic system (small, simple stage treatment system for homes)
Heavy Metals and other chemicals'
Big 3
1) Lead-drinking water
2) Arsenic-occurs natural in earths crust
3) Mercury- naturally occurring found in water
Acid Deposition
- acids deposited on earth as rain, snow, or as gases and particles that attach to the surface of plants, soil, & water
Oil Pollution'
Non chemical water pollution
water pollution laws
Land
Only Humans general waste
The Three Rs/ Composting
Landfills and incineration
Hazardous waste
New ways to think about solid waste
Human health & Environment risks
Human diseases
Toxicology & Chemical risks
LD50
- is when 50% of that population give a specific dose dies
Risk Analysis