Permafrost Definition

Permafrost Sentence Examples

• Until recently, permafrost has locked carbon and methane beneath the surface of the planet.

• Because of the permafrost, Aikhal was built on steel poles for support.

• In the summer, the cold temperatures kept permanent layers of ice on the ground, permafrost, which turned to mud on warmer days.

• In some areas, permafrost is now emitting carbon, which could potentially accelerate the greenhouse effect and global warming.

• Permafrost occupies nearly a quarter of the Northern Hemisphere, but as global temperatures rise, it's melting.