Sunday 3 February 2013

atmosphere!


Earth's Atmosphere


We discussed about the layers of the atmosphere from the innermost layer to the outermost, from troposphere  stratosphere, mesosphere, thermosphere and exosphere. The ozone layer which is in the stratosphere region plays a major role in earth. Both oxygen and the ozone absorbs 95 to 99.9 % UV radiation from a source in the internet. If, there is no ozone layer, there would be no human existing on earth. Because of industrialization and human infinite ways of thinking, the ozone layer gets depleted. CFC's from the technology we made are speeding up the breakdown of the ozone. Now, there are holes in the ozone, and if we continue to be unaware of our ozone, death will await for the future generations.


Humans raised the effect and damage of the natural disasters leaves behind to our environment. Humans are the main culprits who made global warming. It is because of our dumping of chemical waste into water which results in the death of under-water wildlife. When the same water evaporates in the atmosphere, mixing with sulphur dioxide emitting from factories, it results in acid rain destroying vegetation of crops, infrastructures and buildings, and if mixed with rivers and lakes it can kill almost all the aquatic and marine life. Global warming has an advantage because it traps the excessive heat from the sun and carbon dioxide produced on earth but if it has reached the limit, it will cause a global destruction. Because of the enormous extraction of non-renewable resources like coal, oil and other liquids that produce methane, will increase the rate of global warming in the atmosphere, because methane stays in our atmosphere for decades before it escapes outside the atmosphere. We are seeking our own destruction because a decrease of 1 degree in temperature all over the world, will speed up the melting of glaciers and ice caps and cause early ice thaw on rivers and lakes and will also cause the current rates of sea level to rise that will make a greater risk of flooding to low lying areas, and sad to say it may cause a country to sink in the ocean, and therefore killing all the human race living in it. 



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