CO2 - Which gas, written as CO2, is a major cause of global warming?, Methane - Which greenhouse gas emitted by cows contributes to warming?, Deforestation - What process of cutting trees increases CO2 levels?, Temperature - Global warming increases Earth's average ____?,

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?