6 types of pollution

Pathogens

disease causing bacteria

organic waste

leaves, grass clippings, trash, dead animals

BOD

Biological oxygen demand - measure of the amount of organic material in water in terms of how much oxygen will be needed to break it down

Chemical Pollutants

organic chemical = petroleum, detergents, PCBs, PAHs, cleaning solvents

inorganic chemicals = heavy metals, sulfuric, and nitric acid

Sediments

erosion from farmlands, defrosted slopes overgrazed rangeland, construction sites, mining sites, steam banks, roads

affects fish, plants

Nutrients

phosphorus, nitrogen

both are usually in such low amount they limit plant growth but if there is too much it is a eutrophication

All listed out

Pathogens

organic waste

sediments

nutrients

chemical polluatns

BOD