* Rush mus scroll mus rau qhov kawg kom pom cov khoom muag. Qhov yooj yim hnab tsim ua kom yooj yim nqa cov khoom. Muaj menyuam txhais tau tias nqa tau ntau tus menyuam cov khoom siv. Cov niam tshiab uas yuav tsum tau coj lawv cov menyuam tawm sai sai sai sai no yuav pom tias nws yuav siv sijhawm npaum li cas. Tsis yog thauj tus menyuam, tab sis kuj yuav thauj txhua yam uas tus menyuam yuav xav tau thaum tawm mus;
Ib qho ntxiv, cov kev sim tsiaj twb tau ua tiav lawm; (132) Tabsis nws tseem yuav tsum tau pom tias FDA txawm txais cov ntaub ntawv los ntawm cov kev tshawb fawb no. Dab tsi FDA tuaj yeem tso cai yog kev sib piv. Rau lub raum, qhov no yuav txhais tau sib hloov tib neeg cov phiaj xwm nrog cov khoom siv hauv nruab nrog cev, thiab txawm muab cov hlab ntshav kho nrog cov khoom siv hluav taws xob tsim khoom nruab nrog cev.
Lwm yam ntsig txog qhov no: hiav txwv nce tau hloov 0. hloov dua li 15 billion tus neeg. Kev kawm txog kev nyab xeeb kev nyab xeeb rau lub hiav txwv ntawm lub caij nplooj zeeg, dej hiav txwv ua kom sov los ntawm North, ua kom sov sab hnub poob Europe thiab sab hnub tuaj North America. Qhov no yog cov qauv tawg, nyob ntawm qib theem ntawm salinity;
