Tuesday, 9 February 2016

Human Health

continued.....
Air--4500 million years ago Earth happened to be created followed by creation of atmosphere, oceans, seas,volcanoes, mountains, hills, solid surface both rough and even and uneven gradually over a very very long period ; one day came when the first blossom of life extricated as if from nowhere in the form of plant which spread out in every nook and corner of the earth in water and land..Foliage, flowers, fruits of innumerable plants some of which grew into sky kissing heights exhibiting vibgyor colors and vast area pervading aroma dressed the earth to make it ready to receive the next developed life. Life added more life which saw a new world , the animal world. The process of transition was extremely slow and thousands of years rolled by in between which came devastations , upheavals, disappearance of previous creations of plants and animals and substitutions of newer ones and these processes one day gave birth to the homo sapiens in short the present humans. Along with the  series of changes in the earth the atmosphere also underwent changes and the plants and the animals adjusted with such changes so that they could survive. Homo sapiens  people appeared  in the early times (about 200000 years ago) in an environment conducive to them.and the atmosphere presented them hundred percent free air .  With gradual uplift of these people after learning how to make fire for different purposes logs were started to be consumed and in course of time many areas became arid mainly due to deforestation without corresponding replacement by afforestation. Middle east areas bear testimony to the fact of these areas being turned into desert or arid zones. Yet it can be said that except this human  intervention in the natural ecological balance in the environment, the atmospheric conditions remained more or less unchanged till the advent of the industrial revolution when the life style of humans started to change rather reorient in the way which was totally unknown in the 18th century. In the twentieth century the term pollution first raised its dirty head which is now going to deny the access of pure air ..to be continued

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