Alaska- Fragility

Alaska

Alaska is the largest state in the United States by eye socket. It is situated in the northwest extremity of the North American continent and dust the least densely populated state of the U.S. Covering betimes 2 million Km2, Alaska b hostelrys the Arctic Ocean. (Source Warn et al, textbook)
Species of Alaska:
Animals of Alaskas Arctic tundra ecosystem cave in a lot to deal with throughout the prominent northern year as the summer seasons vary dramatically from the winter ones. Some animals take advantage of summers abundance- and avoid winters perils by migrating elsewhere for the winter. Those that remain have uncomparable adaptations to help them succeed year-round. For example the Brown Bear, The density of brown bear populations in Alaska varies according to the availability of food, and in nearly places is as high as one bear per public square mile. (Source, Wikipedia)
Its significance:
About 85% of Alaskas land area is underlain by permafrost. If you dig down through the Arctic tundra, youll presently strike a rock like forge of rigid soil. Even on the warmest summer day, this permafrost layer lies anywhere from a few inches to a few feet below the tundra surface, never thawing. Permafrost is a powerful influence on tundra life.



In summer, it traps a layer of water close to the surface, keeping many tundra soils soggy. It cools the soil and the grow of tundra plants, slowing decomposition and growth. Its presence influences freeze-thaw cycles, forming unique tundra landforms.
Why is it delicate?
The tundra is a very fragile environment. The extremely cold temperatures strike it a difficult environment to survive in during the winter, and plants and animals have a hard time coping with any additional stresses and disturbances. Due to the tundra a combination of factors limits tree growth in the area. Growing seasons are too short for plants that produce forest and the constant strong winds make it difficult for the trees to grow. As salubrious as this, the permafrost causes problems...If you want to get a full essay, order it on our website: Orderessay



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