Cov txiaj ntsig ib puag ncig ntawm kev siv cov ntawv ntim cov khoom siv rov qab yog qhov tsis lees paub. Cov khob no yog tsim los ntawm cov khoom ntoo tau los ntawm cov hav zoov, ua kom lawv cov peev txheej txuas ntxiv. Thaum siv dua tshiab, cov khob ntim tau tawg rau hauv pulp, uas tuaj yeem siv los tsim lwm cov khoom lag luam zoo li cov ntaub so ntswg, cov thawv txais tos npav, lossis duab duab. Qhov no kaw cov txheej txheem tseem ceeb txo cov nyiaj pov tseg tau xa mus rau cov chaw pov tseg thiab pab kom txuag cov khoom ntuj.
Bethanie Carney, muaj ib daim duab muaj koob meej hauv kev tshawb fawb ib puag ncig, cov khoom tseem ceeb, "cov pob ntawv tseem ceeb, nws yog cov khoom ntoo muaj los ntawm cov hav zoov Asmeskas." Qhov no tsis tsuas yog pab txo kom txo cov hneev taw carbon tab sis kuj txhawb nqa cov kev coj ua hav zoov hauv hav zoov kom ruaj khov.
Rau cov lag luam, tau txais cov ntawv siv cov pob khoom siv rov qab yog txoj hauv kev ncaj qha rau kev cog lus kom muaj kev ruaj khov. Txawm koj khiav ib lub café me me lossis ib lub chaw loj loj, ua rau txoj kev xaiv no tuaj yeem txhim kho koj cov duab hom thiab thov rov hais dua rau Eco-ALLOUS neeg cov qhua tuaj noj mov.