SSC MTS EXAM

Detailed explanation-1: -Permafrost is soil that is permanently frozen. Permafrost is a permanently frozen layer on or under Earth’s surface. It consists of soil, gravel, and sand, usually bound together by ice. Permafrost usually remains at or below 0°C (32ºF) for at least two years.

Detailed explanation-2: -Permafrost is formed from ice holding various types of soil, sand, and rock in combination. Permafrost contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide, making tundra soil a carbon sink.

Detailed explanation-3: -Gelisols are soils that are permanently frozen (contain “permafrost”) or contain evidence of permafrost near the soil surface.