Question Answer
Sulfur Oxides a major cause of acid rain, released naturally by volcanoes, anthropogenically by burning of coal
nitrous oxides involved In the formation of O-Zone, can also cause acid rain, comes from the burning of fossil fuela?˜s and vehicle exhaust, appears as a reddish brown gas
tropospheric ozone formed when NOx and VOCs react with sunlight, can cause respiratory issues, causes smog, eye irritation and lung damage
carbon monoxide forms due to the incomplete combustion of fossil fuela?˜s, interferes with hemoglobina??s ability to carry oxygen
lead comes from burning of fossil fuela?˜s and leaded fuela??s, once found in paints/plastics, can cause brain/kidney damage
carbon dioxide sources includes volcanoes, vehicle exhaust, forest fires, burning of fossil fuela?˜s and respiration, increases greenhouse effect
VOCs (formaldehyde, etc.) found in paint, perfumes, prefabricated wood products, glues; can cause respiratory problems and may lead to cancer
radon naturally occurs in bed rock due to the breakdown of uranium, a gas that can get trapped indoors, can cause lung cancer
mold occurs in presence of moisture, can cause respiratory issues
chlorofluorocarbons used in refrigerants, depletes the stratospheric ozone layer, Montreal protocol banned their use
mercury released by burning of fossil fuela?˜s, can contaminate water in fish, causes neurological damage
particulate matter (PM) Sources include diesel engines, burning of fossil fuela??s and wind blowing dust, can cause lung damage, eye irritation reduced visibility
methane can come from livestock omissions, very powerful greenhouse gas