Global warming a threat to physical and biological enviroment
Global Warming as we all know is one of the serious environmental issues resulting from Green House Effect. Out of all Green House Gases (GHGs), carbon dioxide is the most significant one as its concentration in the atmosphere is increasing at an alarming rate. The most interesting aspect of the GHGs is that they allow the incoming solar radiations to come to earth, but do not allow the longer wavelength radiations of the earth to go up. These are reflected back to the earth surface. As a result the earth's surface temperature is getting warmer.