Qhov twg cov neeg nyob qhov twg yog qhov chaw nyob?
Cov khoom noj li qub feem ntau yog ntsia hauv ib puag ncig muaj kev pheej hmoo uas nrawm thiab hluav taws kub heev yog qhov tseem ceeb. Cov nroj tsuag ntau suav nrog cov nroj tsuag tshuaj, cov roj, cov khoom siv hluav taws xob, cov nplaim dej, cov roj av, lossis khoom siv tam sim no. Lawv kuj siv nyob rau hauv cov tunnels, marine chaw, thiab chaw cia khoom vaj tsev nyob cov khoom sib txuas. Cov roj no yog qhov zoo tagnrho rau kev tiv thaiv loj, qhib qhov chaw lossis khoom siv hluav taws xob uas tuaj yeem hloov hluav taws kub. Tsis tas li ntawd, cov chaw nkaum Lawv lub peev xwm los xa cov ntim loj loj lossis tsim txom cov dej ib txhij ua rau lawv tseem ceeb rau kev tiv thaiv cov kev phom sij siab thiab muaj kev tswj hwm hluav taws sai.
