1. Ibyiciro by'ifumbire mvaruganda yohereza mu mahanga Ibyiciro by'ingenzi byoherezwa mu ifumbire mvaruganda mu Bushinwa birimo ifumbire ya azote, ifumbire ya fosifore, ifumbire ya potas, ifumbire mvaruganda, n'ifumbire ya mikorobe.Muri byo, ifumbire ya azote ni ubwoko bunini bwa shimi ...
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