1. Zog {{- txuag thiab ib puag ncig phooj ywg feem ntau yog qhov tsim nyog siv zog, siv zog txo kev siv hluav taws xob thiab kev siv roj carbon ntau. Tsis tas li ntawd, qee qhov hloov pauv sib xyaw ua ke ib puag ncig cov ntaub ntawv thiab thev naus laus zis kom txo qis lawv cov kev cuam tshuam ib puag ncig.
2. Kev tu xyuas yooj yim: cov hloov pauv yooj yim, ruaj, thiab feem ntau nruab nrog cov cuab yeej tiv thaiv kom paub raws sijhawm thiab daws teeb meem. Tsis tas li ntawd, cov hloov pauv tau ntev dua kev kho dua tshiab, txo tus nqi kho thiab zaus.