Tuesday, September 26, 2006

Forest is the lungs of the earth

Forest is the lungs of the earth. Just like human lungs do, it turns carbon dioxide into clean oxygen. Every living creature in this world needs oxygen. Without trees and forests, our earth would be running out of oxygen. Forest absorbs carbon dioxide from atmosphere by doing photosynthesis, a simple chemical reaction that produces energy in the presence of light by chlorophyll. The main substance for this reaction is carbon dioxide and water. A by-product of photosynthesis is, of course, oxygen. Over 40 percent of the world's oxygen is produced from the forests. Another major function of the forest, directly connected to its function as the Earth’s lungs is to keep the planet cool. It helps stop global warming, also known as greenhouse effect. As we already understand, trees are an important part of the carbon cycle, a process that keeps the atmospheric concentration of carbon dioxide under control. Carbon dioxide in the atmosphere traps heat, like a blanket and causing the earth temperature to rise.

Destroying the forest is the same as destroying our own life-support system. A single tree in the park can only produce little amount of oxygen, while a forest which contains thousands or even millions of trees can produce millions times more. Earth’s population is keep growing, and our technology is rapidly increasing. This situation leads to the rise of carbon dioxide concentration in the atmosphere. However, over the past half century, the Earth’s forests have been reduced greatly. The destruction about 14.6 million hectares of forest in the last dozen years makes the earth getting hotter. The average global temperature over the past 50 years has increased at fastest rate in recorded history. And the trend is accelerating, the 10 hottest years on record have all occurred since 1990. If this situation continues, scientists believe that the average global temperatures could be 3 to 9 degrees higher by the end of the century. We can take another point of view to understand the caused of forest destruction. Consider the earth as a living organism, and the forest as its lungs. If the lungs have been destroyed, all cells inside the organism wouldn’t be able to get clean oxygen and eventually died. In this case, we – all living creatures on earth – are the cells.

So it is obvious that we need forest to continue our lives, since destruction of the worlds forests amounts to death of the world we currently know. Let's do what we can to protect our trees and forests.


Dear Dani,
Good writing but you need clearer support for your points, click here (forest mafia) to get more ideas.

2 Comments:

At 10:26 AM, Blogger sandeep said...

good writing

 
At 10:27 AM, Blogger sandeep said...

good writing

 

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