Question

what is permafrost?and tundra.​

Answer 1

Explanation:

Permafrost is found in places where the average annual temperature is below about 23°F (- 5° C), including most of the Arctic and all of Antarctica. Land with underlying permafrost is called tundra. ... In summer, the topmost layer of the permafrost melts, leaving behind soggy ground, marshes, bogs, and lakes.

Answer 2

Permafrost-:

• Permafrost is ground that continuously remains below 0°C for two or more years, located on land or under the ocean. Permafrost does not have to be the first layer that is on the ground. It can be from an inch to several miles deep under the Earth's surface.

Tundra-:

• Tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sámi word тӯндар meaning "uplands", "treeless mountain tract".