ecology-pollutants Flashcards
unsafe co2 levels(ppm)
1000 ppm
carbon monoxide
produced by combustion and sinks down when produced
interferes with gas exchange in lungs
CFCs
chlorofluorocarbons
used in aerosols, refrigerators, air conditioners, foam food packaging and fire extinguishers
impact ozone layer
banned in 1996
smog
created by reactions between oxides of nitrogen and volatiles organic compounds
occurs when pollutants emitted by cars power plants etc reacts with the presence of sunlight
impacts respiration and vegetation
non metal oxides
combine with water in the atmosphere to form acid rain and smog
particulates
small particals that interfere with gas exchange
ex smoke, diesel exhaust, pollen
organic solid waste
water pollutant
from untreated sewage
food waste
runoff
water pollutant
dissolved organic compounds
oil petroleum micro plastics
fertilizers and detergent-eutrophication
pesticides, herbicides and fungicides
point sources
factories
power plants
sewage treatment plants
oil wells
easy to monitor and regulate
non point sources
run off from farms lawns construction sites logging areas road parking lots
difficult to monitor regulate and treat
ppm and half life
parts per million (of molecules in the air)
amount of time for half a sample to break down
bioaccumulate
gradual buildup of chemicals in living organisms
eaten or absorbed
biomagnification
chemicals become more concentrated are each tropic level
pcbs
banned in 1977
long half life
affects reproductive cycles of orcas till 2030
is a pop
pops
persistent organic pollutants
contain carbon
many are insecticides
