Other Than CO₂, What Greenhouse Gas Has the Longest Lifetime

Question

Other than CO2, what greenhouse gas has the longest lifetime in the atmosphere?
A) Nitrous oxide
B) Ozone
C) CFCs
D) Methane
E) Both a and c

Accepted Answer

CFCs and nitrous oxide have the longest lifetimes in the atmosphere, at 50-200 years and 114 years, respectively.