Ntuj Hloov 5 yam teeb meem ntawm txhua yam nyob ib puag ncig uas peb yuav tsum xav txog (5 environmental problems) 5 yam teeb meem ntawm txhua yam nyob ib puag ncig uas peb yuav tsum xav txog. (5 environmental problems we to consider) 5 yam teeb meem no yog 5 yam uas ua teeb meem rau lub ntiaj teb zim txwv no, yog
Nrhiav kev ncaj ncees thiab kev cia siab nyob hauv kev tiv kev ua luam muag neeg nyob Nyab Laj teb, kev tsim lub neej tshiab thiab kev rhuav tshem cov laj thawj tseem ceeb ntawm kev ua luam neeg
