Origin of the Life
(Adriana Guedes)
Origin of the Life
INTRODUCTION
To the long one of the centuries, some hypotheses had been formulated by philosophers and scientists in attempt to explain as the life in our planet would have appeared. Until the century XIX, imagined that the beings livings creature could not only appear from crossing between itself, but also from the rude substance, of one forms spontaneous. This idea, proposal more than the 2 000 years for Aristotle, was known for spontaneous generation or abiogênese. The defenders of this hypothesis they assumed that definitive rude materials would count a "active principle", that is, a force capable to command a series of reactions that would culminate with sudden transformation of the inanimate material in beings livings creature.
They were thus that if she explained the sprouting, in the species human being, of intestinais worms, as roundworm, or the appearance of worms in the garbage, the meat in putrefação or in some mature fruits. In this way, certain foods ingested for the being human being, as well as organic material of the garbage, the meat and the fruits, would be endowed with a ' organizador active principle ' of the life.
Evidently, who thus thought unknown the cycle of life of a fly or one roundworm; one knows, today, that the roundworms appear in the human intestine to leave of the ingestion of water and foods contaminated for fecundados eggs and that worms of the garbage, the meats and the fruits are, in the truth, larvae of flies that if they develop from the eclosão of eggs deposited in these materials for one fecundada fly. But the theory of the spontaneous generation lasted during centuries.
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