Vim tias muaj ntau hom ntoo hauv ntiaj teb, tej zaum yuav muaj ntau yam laj thawj xaiv cov ntoo ruaj khov rau kev tsim vaj tsev, tsim lossis rooj tog. Ib qho eco-phooj ywg, kev ruaj ntseg, kev tu qis thiab pheej yig ntoo yuav tsum yog koj qhov tseem ceeb tshaj plaws. Thiab niaj hnub no peb nyob ntawm no nrog cov ncauj lus kom ntxaws qhia txog qhov ruaj khov, txawv tshaj plaw thiab siv tau yooj yim […]