Biomass ncu tshuab hluav taws xob siv nyob rau hauv lub Hoobkas Hoobkas, vim tias nws tsis yuav tsum tau soj ntsuam, cov nqi tsawg tsawg, kev lag luam yooj yim thiab kev ua haujlwm siab kom ua tau raws li cov kev cai, nws yog ib qhov zoo los ntawm cov neeg siv khoom.
