CAUSES OF GLOBAL WARMING
First of all, as you can see we had a debate on the
causes of global warming, one side was supporting the idea that the sun is the
one causing global warming, and the other side was supporting the idea that,
both, the sun and carbon dioxide were the causes of global warming. My team
supported the idea that the sun and carbon dioxide were the causes of global
warming.
As an introduction, I would like to say that nowadays
the Earth has suffered a lot, because of all the changes in it and all the
contamination we have created; we have been wasting energy, water, trees, and
many other natural resources to the extreme, and we make a lot of trash and
with all the technology and factories we are damaging our world. We were given
this beautiful planet s that we could live in it, take care of it, make the
most of it in all good ways of course, and just to enjoy it, but we have been
exploiting it and we have not been taking care of it as we should. We have to
understand that the Earth is our home and if we do not stop contaminating it we
will finish destroying it.
There are many causes of global warming; one are the
greenhouse gases, which according to statistics 72% of the totally emitted
greenhouse gases are, carbon dioxide (CO2), 18% Methane and 9% Nitrous oxide
(NOx). So we can see that one of the problems is carbon dioxide; carbon dioxide
has increased dramatically within the last 50 years, and it is increasing by
almost 3% each year.
In this chart, we can see that temperature has increased
the last century. During the last 140 years it has increased really
dramatically, as seen in the chart.
Other sources say that temperature has warmed roughly
174°C over the last century, more than half of this warming has occurred since
1979. The Northern Hemisphere has warmed the most due to the oceans tending to
warm and cool more slowly than in land areas.
According to scientists, there could be many causes of
global warming, they don´t completely agree with each other; the majority of
them say that humans have induced the global warming, and the rest say that it
has nothing to do with us. Our team says that indeed we are responsible for all
contamination, and the creation of carbon dioxide.
My theory is that humans have built an empire full of contamination;
buildings, factories, cars, and so on. I am not saying it is wrong, but we have
taken this to an extreme level, all the gases produced on Earth (carbon dioxide
mostly) go up to the atmosphere causing some holes on the ozone layer, and due to
that the sun rays (UV rays) enter and hit really bad on the Earth and all living things.
I also thing that the cycle of the sun is affecting
because as the sun burns through nuclear fusion, there are energy waves
produced and the travel to the Earth released in the form of ultraviolet and
infrared lights, which damage and harness the atmosphere. Some scientists says
that hydrogen will get consumed into helium making the sun collapse, causing
helium to fuse into carbon, and it will cause the White Dwarf, but in the end
it will release all the remaining heat and evolve into a cold dark mass called
Black Dwarf, causing changes in temperature and the will create a geomagnetic
storm for the Earth.
We have had some commentaries coming from the IPCC
(Intergovernmental Panel on Climate Change), first of all they said that
between 2000 and 2030 the greenhouse gasses will increase between 25% and 90%.
They also said that for the next 20 years temperature will increase .2° C per
decade.
Moreover, there are many ways of stopping
contamination, like, separating the trash into organic and inorganic, saving
water, turning off the lights when they are not needed, trying not to use air
conditioner and heaters, disconnecting chargers off the current when not using
them, etc. Some statistics say that if we continue like this in 50 years, it
will be so much harder to live, there will be new diseases, the climate will be
extreme and will dramatically increase and decrease, there will be more acid
rain, water will be finishing and the will not be enough for all the
population, and so on.
To conclude my posture in this debate I would like to
repeat that we have to start to make some actions to save our home, the Earth.
Stop contaminating and making conscience about it. I would also like to say
that I think my team is in the correct position in this debate because both,
the sun and carbon dioxide affect global warming.
Throughout the information presented by the team we
can see that the sun is sending some type of gases to the Earth and they are
affecting our planet really badly and more because of the holes in our ozone
layer caused by the emissions of gases, such as carbon dioxide. The two principal factors given, are just a
few of a thousand factors and if we don´t stop we will end up with no home to
live, so let´s start making some action.
BIBLIOGRAPHY
en.wikipedia.org/wiki/Carbon_dioxide
cdiac.ornl.gov
library.thinkquest.org/.../global_warming.htm
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