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Cimpanzeii au fost observati efectuand practici similare folosindu-se de fire lungi de iarba. Cazul din Congo este insa prima marturie observata in care cimpanzeii se folosesc deliberat de crengi de copac care sunt tinute precum periutele de dinti. Maimutele antropoide folosesc apoi o serie de miscari de tip du-te-vino, extrem de asemanatoare cu cele facute de oameni cand se spala pe dinti. Cimpanzeii folosesc mai ales plante din familia Marantacee. Abundenta de relatari in care cimpanzeii folosesc unelte precum pietre, lemne si plante i-a dus pe cercetatori cu gandul la faptul ca omenirea este martora la o adevarata “ Epoca de Piatra” spre care evolueaza specia cimpanzeilor.
Sursa : Discovery
CITESTE SI:
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