Thursday, August 6, 2009

GLOBAL WARMING AWARENESS

As we see the Earth is warming up! The ice caps were melting down and converting into the oceans. If we see the effects then we see that the rainfall is very uncertain. In future if it is stopped the plants will die that causes the extinction of the HUMAN RACE!! “

As if we see the recent news about the global warming, many people have negative view of the greenhouse effect. In their opinion greenhouse effect is good, as it keeps earth warm enough for us to live here. If there will not be greenhouse effect then there will be severe cold that would not be able to support life. Gases like Carbon dioxide & methane let the sun’s radiation into our atmosphere, but they don’t let the heat to be radiated back form the atmosphere into the space. Due to this the green house effect arises and that keeps the plant inside warm.

It is basically defined as the increase in the amount of greenhouse gases in our atmosphere, which causes the temperature to increase. The humans it self is responsible for it as adding the gases to the atmosphere in several different way.

Many of the activities that we do every day contribute to global warming. Turning on the television, driving a car, drying hair, and using the air conditioner all use energy. This energy usually comes from burning fossil fuels like natural gas, petroleum and coal. Burning these fuels releases carbon which combines with oxygen and increases the amount of carbon dioxide in the atmosphere.

As the deforestation is also one of important reason of the global warming. Peoples are cutting down the trees to make their room, & raising cattle. Trees release oxygen in to the atmosphere and take carbon dioxide from the atmosphere. The fewer trees there are, the more carbon dioxide stays in the air. When the trees are cut down, they are usually burned which releases even more carbon into the air.

How can we help us?

We are also able to control this global warming by taking some of the preventive measures like first of all we have to save our energy by just paying some attention-like turn of the electrical appliances when they are no in use, carpooling and reducing the overall amount of fossil fuels we burn will be a big help. Planting trees and other vegetation will also help reduce the levels of greenhouse gases!

The atmosphere is divided into sections form crust up as follows: Troposphere, stratosphere, mesosphere, thermosphere, Ionosphere, exosphere. We are all familiar with troposphere. This layer mainly consists of approximately 78% nitrogen and 21& oxygen. The remaining 1% includes other gases. It may vary due to pollutants in the air. The Stratosphere contains the ozone layer and the jet stream. Mainly the commercial jets fly in or near this layer. The Ozone layer located in it absorbs the harmful ultraviolet rays and helps protect us. But now days Ozone holes do exist and have been linked to higher skin cancer rates in Australia. In some other parts of world it also exists. Next layer is Mesosphere this area is where meteoroids burn up and leave a streak in the night sky. The Thermosphere is another layer in which it includes both Ionosphere and the Exosphere. The Ionosphere is responsible of reflecting radio waves back to earth. The ions and dust particles also creates a fabulous light show known as aurora borealis sometimes called northern lights. The Exosphere is where we often term as space, it is that area where the satellite holds and allows communicating by the TV and other means. How would you like to do without these layers? Think what would happen without any of these layers?

What might be the result if we lost the stratosphere? Can we do without any one of these layers?

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