Argumentive Thesis Example | Topics and Well Written Essays - 1500 words

Argumentive - Thesis Example The object of this thesis is to diecuss the statement "global warming is not a threat to planet earth†, by a study of both sides of the picture. Thesis: Global Warming Is Not A Threat To Planet Earth Though the proponents of the theory of global warming consider it a threat to the very existence of planet Earth and all its inhabitants, and the same is being propogated by governements and non government organisation; private and public associations; media and politicians; there is another group of scientists strictly adhering to the theory of â€Å"global warming: a natural phenomenon†, The scientists insist that global warming has been a continuous phenomenon irrespective of human activities. Moreover, they refute the global warming threat on the basis of lack of credibility of the techniques routinely used in the science of climatology; which they stress are ill equipped to study and understand the intricacies of weather. One of the major evidences in favour of global w arming being a natural phenomenon is that it has been in existence much before the start of industrial revolution. The concept of hot and cold being relative, if the planet is hot today, there has to be a point of reference; i.e. in comparison to what or when. If we compare the earth temperature to that of 1970s, or to the period spanning 1200 A.D. to the end of 19th century (commonly known as little ice age); yes the planet is warmer (Bradley & Jones, 1993). But in comparison to 1000 A. D. or to more recent 1930s, it is cooler. Infact, since the end of last ice age, 10,700 years ago, there have been seven major phases, four warming and three cooling; one of which is, present warming phase. The melting of glaciers often reported as evidences to global warming threats too can be accounted for by this warm phase or the interglacial phase. The rise in temperature in this phase; 1.5.F is same as that in 1850. Next, greenhouse gases contribute to the phenomenon of global warming in a ver y small measure: 0.2-0.3%, the bigger factors being astronomic, atmospheric and tectonic. The evidence for this comes from the fact that of the CO2 being produced in the atmosphere only a small fraction 3% is manmade. Same holds true for the rest of the green house gases as well; only 18% of methane, 5% of nitrous oxides are manmade (Wallington et al., 2004). So even the most vigorous of human activities can in no way significantly intensify global warming, nor can a complete cessation of activity inhibit it. While its true that a slight warming has been occurring for the past 50 years, but this warming has been mostly noted for night time and winter temperatures. Moreover the warming trend has been more effcetive in the Northern cooler latitudes. This warming like the phase preeceding the little ice age (1000 A.D.) is proving to be beneficial (Bradley & Jones, 1993). On one hand it is levelling the temperatures by making colder regions warmer, on the other hand, it is responsible f or providing longer days, longer seasons and higher CO2 levels for plant growth. This can easily be translated as higher productivity in general, and more agricultural productivity in particular. In light of the above arguments