According to the statement of experts working together with the World Meteorological Organization, in 2011, set a new record for the concentration of greenhouse gases in the Earth's atmosphere. Assessing the composition of air, the researchers paid particular attention to the chemical components such as carbon dioxide, methane and nitrous oxide, and found a significant increase in the volume of each of these substances.
You can not argue with the fact that the above gases are released as a result of some natural process, but in the vast majority of greenhouse gases released into the atmosphere as a byproduct of human activity, especially with the constant burning of fossil fuels.
Thus, the concentration of CO2 was 390.9 parts per million (approximately 140% more than in the pre-industrial period), CH4 is 1813 parts per billion (259% of preindustrialnogo concentration level), and N20, respectively, 324.2 parts per billion (120%). These emissions are actively interacting with the environment, causing her great harm.
Next in line for getting into the top five of harmful substances in our atmosphere — sulfur hexafluoride, chlorofluorocarbons that destroy the ozone layer, and slightly halogenated gases. These hazardous substances are recognized as an individual, and in those cases when they begin to interact with each other.