GENERAL KNOWLEDGE

Detailed explanation-1: -Permafrost is any ground that remains completely frozen-32°F (0°C) or colder-for at least two years straight. These permanently frozen grounds are most common in regions with high mountains and in Earth’s higher latitudes-near the North and South Poles. Permafrost covers large regions of the Earth.

Detailed explanation-2: -Permafrost is soil, rock or sediment that is frozen for more than two consecutive years. In areas not covered by ice, it exists beneath a layer of soil, rock or sediment, which freezes and thaws annually and is called the “active layer".

Detailed explanation-3: -Permafrost is a powerful influence on tundra life. In summer, it traps a layer of water close to the surface, keeping many tundra soils soggy. It cools the soil and the roots of tundra plants, slowing decomposition and growth. Its presence influences freeze-thaw cycles, forming unique tundra landforms.