Topic: Green House Gases And Their Effects

Type of paper:	Speech/Presentation
Subject area:	Nature
Academic level:	College
Style:	APA
Size:	43.5 kB
Word count:	777
Mark awarded:
Date submitted:	2008-11-22 01:29:12
Rating/Votes count:	4.00 / 2

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Greenhouse Gases
It cannot be denied that the uncontrollable amount of gases being
released into the atmosphere is now taking its toll on the environment .
As of the moment , greenhouse gases are starting to create a real threat
to all the creatures that this planet hosts and not even the thinking
humans could get away from this global dilemma .
So what exactly are greenhouse gases and what is the single most
evident effect they have to the environment ? Basically , greenhouse gases
are emitted particulates coming from human activities which accumulate
in the upper layer of the atmosphere . These gases may come from
vehicles , commercial products and industrial facilities . The Natural
environment has its own contributions too but at a very conservative
amount and in the most natural of ways .
For most people , and for most creatures , greenhouse gases do not
immediate induce a negative after-effect . However , as these gases escape
into the atmosphere , they tend to form a huge blanket which traps the
excess heat in the Earth 's surface coming from the sun 's rays . In the
normal course of nature , greenhouse gases will absorb the heat of the
sun while some parts of it will be reflected out (High Beam Research ,
2005 . However , at higher concentrations , these compositions of water
vapor , methane , carbon dioxide , nitrous oxide and other chemicals can
build up too thickly that the excess heat may no longer be able to
bounce back to space causing it to be trapped in the lower portion of
the Earth 's atmosphere . Therefore , the single most evident effect of a
large concentration of greenhouse gases will be the rise in the planet 's
temperature .
Greenhouse gases ' effect on world temperature rise may be as benign
at it seems but actually , the secondary effects of these gases are far
than being simple . With such an increase in world temperature , the
planet 's normal climate procedures may be compromised , affecting the
lives of all the biological creatures , including of course the humans .
Over the last century , the world 's average normal temperature has
already increased by about 0 .50 degrees Celsius (Hopwood . It may seem
not much but the effects are truly obvious by now .
With an increase in temperature , the polar ice caps will melt
dramatically . This will permit a rise in world water levels threatening
the lives of those living near the coastal areas . Also , such rise of the
water in oceans may lead to the redistribution of water resources which
will make it much harder for food production .
Another possible effect of a thermal increase due to greenhouse
gases is the sudden changes in weather patterns . Since The El Nino and
La Nina phenomenon directly interact with the changes in the atmosphere (National Weather Service , they will be aggravated which will cause
more devastation on human lives . Due to the redistribution of the wind
and heat cycles , more torrential rains may be expected while severe
droughts can be experienced in certain parts of the world .
Lastly , due...

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