Global Warming: True or False?

           Today, while I was sitting in my desk waiting for the next class to start, I heard something very shocking. Some of my friends were saying that global warming is not true. I was going to say that every scientist has already approved of the fact of global warming but I waited to hear their point of view which had some persuasion.

           Before I attack what the opposing group says, we should probably know what exactly global warming is. Global warming is when the temperature of our planet is slowly, but firmly increasing. It?s a part of climate change. Some say that according to graphical data, the slope is actually a zigzag going up and down constantly thus concluding that global warming does not exist. This is true. However, they misinterpreted the definition of global warming. Those up and downs are possible in short term observations, but if we see the slope during the interval of almost 30years, we can see that the average temperature has definitely risen.

           One of their points was that according to the laws of physics that energy (or in this case heat) is always conserved, just in a different form saying that a lot of heat is normal if we use this knowledge. At first, I was kind of persuaded, but I remembered that the other forms of energy are sound, chemical, electric, heat, kinetic, and other forms that I am not sure of. But if we consider an excess of all these energies, none of them have a good effect whatsoever. Too much sound can damage our eardrums, chemical energy can be corrosive to our bodies or our environment, electric energy can electrify us, kinetic energy will probably make this Earth a too energetic place, and heat is what we see now: global warming.

           Another point that my friends have pointed out is that there are areas where the temperatures have actually gone down such as the winters of various countries. This is also true. However, like global warming is a part of climate change, there are also factors that make the climate colder, dryer, wetter, and etc. However, generally, global warming has a big effect on every season thus resulting on a slow increase in the average temperatures in cold places at winter. But there might be factors, such as the jet current, that are disturbed by this phenomenon that can cause the sudden cold.