Permafrost
The "Active layer" is the few inches of permafrost that thaw in the summer.
The "Active layer" is the few inches of permafrost that thaw in the summer.
Permafrost is the layer of permanently frozen ground that lies underneath the top soil of the tundra.
The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.
The tundra has permafrost because the soil in the tundra is very poor. This is why there are not many trees or plants that grow very tall in the tundra. Permafrost is the top layer of soil that is frozen. Obviously there's permafrost because in the tundra it is very cold and the soil is not very rich.
No, it is called permafrost, which is a top layer of frozen soil. It is bad for growing plants which is one reason that there is not many plants in the tundra.
The "Active layer" is the few inches of permafrost that thaw in the summer.
The "Active layer" is the few inches of permafrost that thaw in the summer.
Permafrost is the layer of permanently frozen ground that lies underneath the top soil of the tundra.
it melts
The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.
The top layer of soil thaws :D
The tundra has permafrost because the soil in the tundra is very poor. This is why there are not many trees or plants that grow very tall in the tundra. Permafrost is the top layer of soil that is frozen. Obviously there's permafrost because in the tundra it is very cold and the soil is not very rich.
Leaching?
There are four layers and the four layers are top layer called the organic layer, Upper soil layer, middle soil layer, and the last one is lowest layer.
crust
Permafrost because the top layer is to weak to dig on or into. So the most reasonable answer would be permafrost