Tsev cog khoom

Peb lub tuam txhab tsuas yog tsim thiab xa tawm hemp ntau lawm, zaub thiab txiv hmab txiv ntoo cog qoob loo, horticulture, qhia kev sim thiab kev lag luam cog qoob loo, uas yog muag rau cov tib neeg, liaj teb, cov tswv lag luam, tsoomfwv thiab lwm pab pawg thoob ntiaj teb.