2
3
Which substance is a greenhouse gas that is emitted by human activities, is the most widespread, an
he air the longest?
Owater vapor
O methane
Ofluorinated gas
O carbon dioxide
3
Which substance is a greenhouse gas that is emitted by human activities, is the most widespread, an
he air the longest?
Owater vapor
O methane
Ofluorinated gas
O carbon dioxide