The WHO's models indicate that around 92% of the world's population live in places where air quality levels exceed their guidelines.
Ndi Ntuli Aka tụgharịpụta na ntuli aka ndị gara aga bụ ihe dịka 10% n'ụwa niile.Ọ ka mma na ndị obodo nwere nkwado afọ ofufo n'ntuli aka. ụfọdụ n'ime obodo ndị ahụ ruru ihe karịrị 20% tụgharịpụtara n'votụ