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=// __TOPIC 6__: Describe how climate change affects natural systems? //=

//** In our highly growing society it is extremely hard to cut down on our lifestyle but knowing the fact that our only world which is the only land consisted of oxygen and nitrogen is going to be destroyed by humanly doings is really sad; thougj the important thing to know is how the climate change is affecting our natural systems. **// // Climate change is a long term change in the distribution patterns of weather over a period of long time and these drastic changes on our earth are there and each and every day they affect or lives without us knowing. Climate change has a great affect on our natural systems like ice shelves, caps, permafrost region and glaciers. Though the question is to know how this all is happening? How is climate change also known as Global Warming affecting our natural systems? What are the consequences of it on our Earth and us humans, both? //

// Climate change is affecting many natural systems like most of our continents and oceans are being affected by regional climate changes mostly because of temperature increase. For example as in North America Industries that are relying on melt water from winter snows could be hit hard by temperature rises that cause more of the precipitation to fall as rain. The melting of Arctic ice is also causing concerns in the northern continents because the sea level is rising which clearly threatens the settlers that spend much of their years in the polar ice caps. Also the most in danger species the polar bears can disappear if the ice starts to pull away or disappear from the mainland leaving some humans and territories without food. Since the Caps are melting with the Glaciers as well with the oceans which are shifting in ranges, plankton and fishes with high latitudes and high altitudes are experiencing the threat so they are all going through early migrations as water is warming. //

// The experts also say that in the worse case scenarios 20-30% of plant and animal species are likely to be at increased risk of extinction if global average temperatures rise more than 1.5-2.5 ° C. Birds migrate way earlier and the egg laying is also occurring earlier and the ranges of plant and animal species are towards the polar and higher altitudes. The instrumental records shows rising sea levels and decrease of snow cover in the northern hemisphere this is due to the increase in concentration of green house gasses. Since the last hundred years or so the globel warming have increased so are the changes in the Arctic which gives us the release of Arctic methane the terrestrial carbon from the Permaforest regions!//

// Regarding the melting if ice shelves, caps and glaciers the experts with their high confidence say that the glaciers and lakes are getting larger and are also increasing,many glaciers and snow fed rivers are going through an increasing run off and earlier springs. Increase in levels of //CO2 // give us an uptake on Anthoprogenic carbon dioxide from the atmosphere which becomes less absorbent to excess //CO2 which affects a number of oceans. In the end all the rising sea water because of thermal expansion with glaciers and ice sheets melting leads to increase in temperature layers, and not only affects our natural environment but also affects us humans economically, phisically, and socially.

// These are the GIS based models showing how the Mackenzie valley permafrost regionsof distribution & thickness under various climate warming scenarios. //
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= BIBLIOGRAPHY: = 1. http://environment.nationalgeographic.com/environment/global-warming/gw-solutions.html 2. http://gsc.nrcan.gc.ca/permafrost/suppdoc_e.php 3. http://en.wikipedia.org/wiki/Effects_of_global_warming 4. http://en.wikipedia.org/wiki/User:Alice1455. 5. http://globalwarming.house.gov/impactzones/greenland