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The world we live in is amazing with countless varieties of living organisms spread all across the globe, be it anywhere from the peaks of mountains to the depths of the deep sea we can find life; each life form has its own way of dwelling. There is no end to the number of organisms you can find on earth ranging from single -celled organisms to multicellular organisms; including humans, plants, birds, animals and other countless number of small and big organisms. The surprising part is how all these organisms live under one ecological system. This ecological balance that is maintained naturally among the population of different organisms on the earth is remarkable, but the question which comes to our mind when we look at this ecological set up is, what exactly is life? How did all the organisms come into existence? How is this ecological balance among the enormous population of different organisms maintained? To find the answer to all these how's we will have to understand what exactly life is?

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