Ntuj Hloov Tej huab cua tsis zoo nyob saum nruab ntug yog dab tsi ? Thiab ua mob rau peb lub cev tau li cas? Tej huab cua tsis zoo nyob saum nruab ntug yog dab tsi ? Thiab ua mob rau peb lub cev tau li cas ? (What is air pollution and how does it lead to disease in our bodies?)
Lub Koom Txoos nyob Is Ntos Nes Xias qhib kev pab thoob teb chaws, tom qab av qeeg muaj ceem hauv lub pov txwv Flores.
