It is possible to create wind,water,soil,electricity,heat using new developments in science and engineering..One can not think of living without microrganisms and bacteria.Global warming could wipe out microbes that ‘make life possible’
http://www.rtcc.org/2013/.../global-warming-could-wipe-out-tiny-building-blo.
It is an interesting question. I agree with the above discussion laid by sukla sir. Further few points on some beneficial aspects of microflora in human body for example gut will help put some insights into the questing asked.
Gut flora consists of a complex of microorganism species that live in the digestive tracts of animals and is the largest reservoir of human flora. In this context gut is synonymous with intestinal, and flora with microbiota and microflora; the word microbiome is also in use. Gut flora's primary benefit to the host is the gleaning of energy from the fermentation of undigested carbohydrates and the subsequent absorption of short chain fatty acids.
The human body carries about 100 trillion microorganisms in its intestines, a number ten times greater than the total number of human cells in the body. The metabolic activities performed by these bacteria resemble those of an organ, leading some to liken gut bacteria to a "forgotten" organ. It is estimated that these gut flora have around a hundred times as many genes in aggregate as there are in the human genome.
Bacteria make up most of the flora in the colon and up to 60% of the dry mass of feces.Somewhere between 300 and 1000 different species live in the gut, with most estimates at about 500.However, it is probable that 99% of the bacteria come from about 30 or 40 species.
So, the role of microorganisms is certain for life.
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