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Global warming

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'There is no such thing as global warming and even if there is, humans are not to blame.' The term 'global warming' refers to an overall increase in the Earth's temperature which may be caused by a number of factors, including the greenhouse effect. The atmosphere has a 'natural supply' of greenhouse gases which keep the Earth at a suitable temperature (above freezing). Scientists have said, however, that there being too many of these gases in the atmosphere is causing the temperatures rise too much and too quickly, causing many problems for the environment. Although it has become a worldwide phenomenon over the last few years, there are many people with the attitude that global warming doesn't really exist. There has been debate all over the world and there are a number of different popular theories. Whilst some people believe the world is getting warming and it is being made worse by humans, others have the opinion that it is a natural process that is nothing to do with us. There have been numerous investigations done by scientists and records gathered from over a long period of time that may indicate different patterns in temperatures in relation to human activity on Earth, but these are almost always scrutinised by critics. ...read more.


To find data about temperatures for before records begin, scientists have to use natural indicators such as tree rings. Information about past temperatures can be shown in the distance between each ring. It has been discovered that a tree said to be over 9,500 years old has revealed that summers that long ago are likely to have been warmer than summers currently, however, with the current increase in temperatures the modern climate is quickly catching up. It is difficult to know how reliable this is a source as there can be no exact figures taken from it and many experts arguing for man-made climate change would use this fact as an argument against the Earth being warmer in the past. There are fluctuations in almost all of the temperature records which can be due to natural events such as the eruption of volcanoes or changing weather patterns. This is evident in 1998 when temperatures rose following the El Nino event. It is disputed that the change in temperature over time could also be down to a number of things. The position of thermometers around the globe could be hugely affecting their temperature readings. Urbanisation over time for example would have a big impact. ...read more.


Most probably because the warmer temperatures release gas from the oceans. This would back the argument that humans emitting carbon dioxide into the atmosphere is not what causes global warming. The counter argument would be that although true, these facts are irrelevant because the ocean takes this long to respond to atmosphere changes driven by shakes in the Earth's orbit. The extra emissions today are also at a 35% increase above pre-industrial levels caused by humans. This is higher than ever found in ice records. To conclude, it would seem that there are hundreds of theories voiced about what is happening to the temperature of the world currently, however, some are very contrasting and all are debated. It remains unclear as to which side of this argument is correct as there are so many possibilities in between. However, what seems to be clear is that the Earth is warming, whether caused by humans, naturally, or just as part of the Earths cycle. With every argument put forward by specialists, there is a counter argument put forward too.This uncertainty could make it difficult in finding ways to stop it, and some would argue that we just shouldn't bother instead letting nature take its cause. With sea-levels undoubtedly rising and problems being caused for wildlife, even if some are convinced that humans are not responsible for global warming no one can deny that these events are occurring and people should work to change. ...read more.

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