<classify> Iyi nharaunda itsva ine zviwanikwa zvakasiyana-siyana nezvinokwikwidza zvakawanda, saka zviwanikwa zvitsva zvinoda maitiro matsva kana kuti kuwirirana nezviripo kuti zvikwikwidze zvakasimba kupfuura zvazvaiita kare.  <topic>: biology, origin of life 