â What/How do you mean?â = â Meaning? â [=what exactly do you mean when you say that?] âHe can be a little difficult.â â I know what you mean.â [=I agree]
It has an atmospheric life of 3,200 years and global warming potential 23,900 times stronger than carbon dioxide. SF6 is considered one of the most dangerous greenhouse gases known. It is banned as a tracer gas and is limited to high voltage applications. In addition, the US Department of Energy repaired leaks in several laboratories, thereby reducing emissions by 35,000 pounds a year.
1 There are alternative fuels, some less harmful to the atmosphere and some which do no harm at all. 2  The Thames has highly dangerous levels of e.coli and other harmful bacteria. 3  CFC gas damages the ozone layer which protects the earth from harmful rays from the sun. There are alternative fuels, some less harmful to the atmosphere and some which do no harm at all. 2  The Thames has highly dangerous levels of e.coli and other harmful bacteria. 3  CFC gas damages the ozone layer which protects the earth from harmful rays from the sun.