Assertion: ozone | /r/CreatedBy | human activity
Facets:
value: far away from local control
type: OTHER
Source sentences:
text: The term “background ozone” relates to ozone not controllable by a local region, meaning it is sourced from both natural processes such as wild fires and lightning, as well as ozone created by human activity far away from local control including outside the U.S.Production of cleaner burning fuels, reduction of gasoline vapors at fueling stations, emission controls at refineries and production facilities are among the contributions the petroleum industry is making to reduce hydrocarbons and nitrogen oxides for ground-level ozone.