Nitrous Oxide Emissions
N2O emissions from agriculture and industry, a potent greenhouse gas (300× CO2 warming potential) and ozone-depleting substance.
Formula
GWP(N₂O) = 298 × CO₂ over 100 years
Real World
Nitrogen fertiliser applied to maize fields in the US Corn Belt releases N₂O as soil microbes nitrify and denitrify excess nitrogen, making agriculture the dominant global N₂O source.
Exam Focus
Quote the GWP figure (298×) in extended answers; examiners reward precise comparative data, not vague 'much more potent than CO₂' statements.
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