Sunday, May 20, 2007

Topic 15: Greenhouse effect

http://en.wikipedia.org/wiki/Greenhouse_effect
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So what is greenhouse effect?

Greenhouse effect is the rise in temperature that the earth experiences because certain gas in the atmosphere trap the heat (radiation) from the sun. The gases that trap these heat is known as greenhouse gases. Example of greenhouse gases are carbon dioxide, methane,fluorocarbon, nitrous oxide.

The atmosphere is just like the glass window of a greenhouse, trapping heat.
If without this greenhouse effect, earth will not be warm enough for humans to live, but if this effect become stronger, earth will be warmer than usual and may cause problems for the living organisms on earth.
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Situation:
Because of many human activities, much greenhouse gases were produced and therefore more heat is trapped withing the earth surface. Therefore resulting in global warming at a faster rate.
Factories, cars, and deforestation are some examples of human activities that cause more greenhouse gases in the atmosphere. So the temperature on earth would become hotter and hotter, resulting in environmental problems. For example, many living things cannot withstand the heat and may die, while the ice at the arctics with melt, causing flooding on lowland.So this is brings us to a question if the earth can be saved.
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Conclusion:
Yes, almost everything we do are producing greenhouse gases. We are producing emitting more greenhouse gases into our atmosphere every second. So the earth temperature will get warmer and warmer, as days goes by. Global warming is a natural process that happen to earth, alternating with ice age, which will take many many years. However, due to our human activities, we are increasing the rate of global warming. It is something that we have to face.
We can only help if we reduce the production of greenhouse gases whenever possible, and stop much of the damages we cause to the environment, with pollutions and everything.
OH YES! DONE WITH THE LAST TOPIC, BUT STILL HAVE THAT ' HOW TO SAVE THE EARTH' . SO IRRITATING. YES IRRITATING

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