one of the major reasons may the cfc's realeased from the the large amt of ac's and refrigerators or other cooling stuffs like that which create coolness for the particular area but in return give disastrous feedback to the nature's ecological balance.

there must be some replacement of these ac's which can give coolness but not realese harful gases.we must workout on basic sources of cooling (such as trees/plants which in day time replenish the air by realing o2 ).we must discover the itermidiate way gives us our need (cooling) and also does not have negative effect on nature.

we can think of catalyst sort of thing which enhances the o2 content realised per hour which can act as cooling source. or we can think of each ac must be compulsarily accompanied by 2or 4 plants by its side so that the negative effect can be nullified.

ITS OUR PLANET AND WE ONLY HAVE TO THINK ABOUT IT BEFORE IT IS TOOOOOOOOOO LATE