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Nedeľa, 2. apríla 2023
Greenhouse effect
Dátum pridania: 27.12.2001 Oznámkuj: 12345
Autor referátu: kris_d
Jazyk: Angličtina Počet slov: 917
Referát vhodný pre: Stredná odborná škola Počet A4: 2.9
Priemerná známka: 2.97 Rýchle čítanie: 4m 50s
Pomalé čítanie: 7m 15s

Another ways, in which greenhouse gasses are being produced, are, for instance, biomass burning and fertilizer use (production of nitrous oxide), using aerosols and refrigerants containing CFCs, and photochemical smog producing ozone (it may look like a good activity, but this ozone is the one collecting in the lowest atmospheric regions that acts as very strong greenhouse gas).
The “bad” form of greenhouse effect and the next rise in temperature, which is predicted to be between 0.8 and 4.1ºC until the year 2030, are understood as scarecrows due to their very dangerous consequences. They will be accompanied with changes in global climate. Firstly, weather will at least change or maybe even absolutely invert. Rains will fall rarely but in greater intensity; dry places like deserts, for instance, will enlarge and become drier. Some areas near the coasts will be cloudier and wetter and there will be more storms. Inland areas will have a little more rain, but because the temperature will be higher, they will be drier. Secondly, some glacial and surface ice and snow will melt, raising the height of world's oceans by as much as 20 centimeters until 2030 and 65 centimeters until the end of this century. This will cause floods in many low-lying areas on the coasts, presently occupied by hundreds of millions of people. Thirdly, a lot of clouds will appear. This issue is very discussed and actually it is very unsure what may happen then. Maybe the cloud layer, by reflecting sunlight back into space, will make Earth cooler again. But will there not appear a magical ring in which Earth will be spinning by firstly cooling and then warming? Or will the temperature not decrease so much that there could be no life on the Earth?
After realizing the seriousness of the situation, civilization started doing actions for preventing the greenhouse effect. There are many possibilities how to stop immediately the warming. Some of them are “smaller”, mostly household activities that everyone can join. Those are sorts of ”turn off the light when you are leaving the room“, “recycle”, “use unleaded fuel”, “travel with a bike instead of driving a car“, ”install solar panels on your house “ etc. The other types are much bigger, planned by scientists activities. I mean, for instance, “burying” the carbon dioxide under earth surface, pumping a huge quantity of iron and plankton in the oceans, which would then absorb the CO2 from the air, or pumping directly the carbon dioxide there, which in the water could become liquid. The problem is that not every country has the financial possibilities (the costs for extracting the CO2 from the air are really huge), or, like USA for example, the want to do so. Although representing just 4.5% of Earth’s population, USA annually produces 25% of the greenhouse gases released in the air. There is a Protocol composed in 1997 in Kyoto that is signed by almost all countries in the world. It supposes them to lower all the carbon dioxide emissions at least by 5.2% until the year 2012.
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