This is the 12976th most frequent Spanish word.
permafrost
Permafrost: Permanently frozen layer of soil or ground.
In this sentence, 'permafrost' is used as the subject to describe a natural phenomenon existing in cold climates.
El permafrost se encuentra en regiones árticas y subárticas.
Permafrost is found in Arctic and sub-Arctic regions.
Here, 'permafrost' functions as part of a noun phrase describing a source of environmental impact ('release greenhouse gases').
El deshielo del permafrost libera gases de efecto invernadero.
The thawing of permafrost releases greenhouse gases.
In this sentence, 'permafrost' acts as the object of preposition 'on,' indicating what is affected by climate change.