Arctic Tundra
![Picture](/uploads/5/2/9/2/52920645/757284882.png?319)
The arctic tundra is located at the top of the northern hemisphere.
The climate in arctic tundras is very cold, winds and with very little rainfall. Mammals that live year round in the arctic is the arctic wolf, brown bear and muskox. Caribou are herbivores. Caribou are members of the deer family. Caribou’s thick fur coats have hollow hairs. This helps to keep them warm. Caribous move across the Arctic in large herds. Caribou eat moss, lichens and green plants. For the winter they go to the forests of the south where trees give them protection from the wind and the snow. In the spring the caribou leave the forests. The arctic willow is a small shrub that is a producer that actually grows close to the ground. It is adapted to permafrost by growing really shallow.
Arctic tundras have low precipitation (less than 10 inches per year) and dry winds.
In the arctic there are two seasons:winter and summer. During the summer the sun is mostly present at almost 24 hours a day. In the winter the opposite light conditions are present.
Global warming, pollution and oil spills are the threats that affect the arctic tundra.