Two primary air pollutants are
a) sulphur dioxide and ozone
b) nitrogen oxide and peroxyacetyl nitrate
c) sulphur dioxide and hydrocarbon
d) ozone and peroxyacetyl nitrate
Two primary air pollutants are
a) sulphur dioxide and ozone
b) nitrogen oxide and peroxyacetyl nitrate
c) sulphur dioxide and hydrocarbon
d) ozone and peroxyacetyl nitrate
