A na-akwa emo ihe nkiri dị mfe site na 1990s na Europe na ihe kpatara ya bụ iji belata ihe na-emerụ ụmụaka ahụ ma dozie nsogbu nke mmeghe nke ngwugwu plastik siri ike.Mgbe nke ahụ gasịrị, a na-eji akwa akwa dị mfe ọ bụghị nanị maka nkwakọ ngwaahịa ụmụaka, kamakwa ngwugwu ọgwụ, nri pa ...
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