what is a permafrost?

Answer 1

interesting sub soil in Alaska and cannot build on it.
sinks.
When they built the Alaska American highway lots of trouble and had to drop layers of stuff to make firm.

Discovery and History channels lots of shows on this
a very interesting experience.

Answer 2

Permafrost
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This article is about frozen ground. For other meanings, see Permafrost (disambiguation).
In geology, permafrost or permafrost soil is soil at or below the freezing point of water (0°C or 32°F) for two or more years. Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material. Most permafrost is located in high latitudes (e.g. North and South poles), but alpine permafrost exists at high altitudes.

The extent of permafrost can vary as the climate changes. Today, approximately 20% of the Earth's land mass is covered by permafrost (including discontinuous permafrost) or glacial ice. Overlying permafrost is a thin layer of ground called the active layer that seasonally thaws during the summer. Plant life can be supported only within the active layer because growth can occur only in soil that is fully thawed for some part of the year. Thickness of the active layer varies by year and location but is typically 0.6–4 m (2 to 12 feet) thick. In areas of continuous permafrost and harsh winters the depth of the permafrost can be as much as 1493 m (4510 feet) in the northern Lena and Yana River basins in Siberia.

Answer 3

hydroponic marijuana distributed among emo kids and sophomores at ike. n00bs think it is special and the best bud in the world, but is actually just normal dros, and given the name to make it sound special. kids who like permafrost normally smoke schwag or bc's and have never smoked real bud.

Answer 4

I thought you were talking about my wife.