= Solution
<Methane> consumes <hydroxyl radicals> during its initial <oxidation> and therefore influences atmospheric oxidative capacity and the removal of other trace gases. Subsequent <oxidation> generates <peroxy radicals>. In the presence of sufficient <nitrogen monoxide>, these convert <nitrogen monoxide> to <nitrogen dioxide> without consuming <ozone>, allowing net <photochemical ozone production>. At low <nitrogen monoxide>, peroxide formation and ozone-destroying <radical> reactions compete. <Methane> <oxidation> ultimately produces <carbon monoxide> and <carbon dioxide>; the sign and rate of the associated <ozone> response depend on the <radical>/<nitrogen oxides> regime, not <methane> alone.
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