![Peb yuav tsum khawb cov dej ntws? Peb yuav tsum khawb cov dej ntws?](https://i.tvmoviesgames.com/preview/questions/17868065-should-we-dredge-rivers-j.webp)
2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev khawb av yog tseem ceeb heev rau kev khaws cia ntuj ntws ntawm tus dej thiab txo qis kev pheej hmoo ntawm kev puas tsuaj tshwm sim hauv cov nroog uas muaj kev pheej hmoo rov tshwm sim dej nyab thaum lub caij los nag.
Vim li cas ho tsis khawb dej?
Nws ua phem rau biodiversity, cuam tshuam rau dej turbidity thiab dej theem. Nws tseem tuaj yeem ua rau kev nuv ntses thiab ua rau thaj av puas tsuaj. Nws txhawb nqa kev yaig ntawm ntug dej thiab tsim kev poob av uas tsis xav txog; dej nyab tuaj yeem ua rau hnyav dua li qhov tshwm sim. Nov yog qee qhov tshwm sim ntawm kev khawb av.
Yuav khawb dej puas phem rau ib puag ncig?
2.4.3 Kev puas tsuaj rau cov tsiaj qus thiab dej ecosystems
Dredging tuaj yeem muaj qhov cuam tshuam ncaj qha thiab tsis ncaj rau ecosystems. Piv txwv li, nws tuaj yeem ua rau poob thiab degradation ntawm tej vaj tse thiab nta xws li pas dej ua ke thiab riffles. Nws tseem tuaj yeem cuam tshuam rau ntau hom kev tiv thaiv.
Dab tsi yog qhov txiaj ntsig ntawm kev khawb av?
Kev nce dej hauv qhov tob: Raws li sediment tsim nyob rau hauv qab ntawm txoj kev dej, nws txo qhov tob ntawm dej. Dredging strips tseg cov khoom khib nyiab, uas tuaj yeem rov qab lub cev dej kom nws qhov tob tob thiab txo qhov kev pheej hmoo ntawm dej nyab.
Thaum twg UK tau tso tseg kev khawb av?
Yav dhau los, kev khawb av yog kev saib xyuas tsis tu ncua ntawm cov dej hauv tebchaws Askiv. Nws cov neeg txhawb nqa hais tias, txawm li cas los xij, hais tias European Water Framework Directive, tau qhiahauv 2000, tam sim no txwv tsis pub nws ua.
Pom zoo:
Peb puas yuav cia siab tias peb yuav tau txais kev txhawb nqa thib peb?
![Peb puas yuav cia siab tias peb yuav tau txais kev txhawb nqa thib peb? Peb puas yuav cia siab tias peb yuav tau txais kev txhawb nqa thib peb?](https://i.tvmoviesgames.com/preview/new-questions/17895756-should-we-be-expecting-a-third-stimulus-check.webp)
Teb: Ntau lab tus neeg Asmeskas twb tau txais lawv qhov kev ntsuas thib peb. Thiab IRS yuav xa tawm ntau dua ob peb lub lis piam tom ntej. Yog li, yog tias koj tseem tsis tau txais koj cov nyiaj them poob haujlwm (piv txwv tias koj tsim nyog tau txais kev them nyiaj), nws yuav tsum tuaj sai sai.
Peb yuav tsum kho peb cov menyuam genomes?
![Peb yuav tsum kho peb cov menyuam genomes? Peb yuav tsum kho peb cov menyuam genomes?](https://i.tvmoviesgames.com/preview/questions/17911598-should-we-edit-our-childrens-genomes-j.webp)
Kho cov noob hauv tib neeg embryos tuaj yeem muaj ib hnub tiv thaiv qee yam kab mob loj tsis pub dhau los ntawm niam txiv mus rau lawv cov menyuam - tab sis tam sim no, cov txheej txheem dhau los risky ua siv nyob rau hauv embryos destined rau implantation, raws li ib tug high-profile thoob ntiaj teb commission.
Puas yog cov dej ntws ntws thiab nqes dej sib xws?
![Puas yog cov dej ntws ntws thiab nqes dej sib xws? Puas yog cov dej ntws ntws thiab nqes dej sib xws?](https://i.tvmoviesgames.com/preview/questions/17921040-are-upstream-and-downstream-sensors-the-same-j.webp)
A: Cov xov hluav taws xob ntws mus rau hauv cov yeeb nkab los ntawm lub cav, ze rau pem hauv ntej ntawm lub tsheb, thiab cov xaim hluav taws xob nqes mus rau hauv lub catalytic converter, ntau dua rau tom qab ntawm lub tsheb. Lawv tsis hloov pauv.
Puas tuav lub pas dej yuav tsum tau khawb?
![Puas tuav lub pas dej yuav tsum tau khawb? Puas tuav lub pas dej yuav tsum tau khawb?](https://i.tvmoviesgames.com/preview/questions/17924015-do-retention-ponds-need-to-be-dredged-j.webp)
Nyob deb, txoj hauv kev zoo tshaj los pab kom koj cov dej nag los tuav lub pas dej kom huv si yog kom lawv khawb ib zaug lossis ob zaug hauv ib xyoos. Mechanical dredging yuav tshem tawm cov txheej hauv qab ntawm cov organic muck uas yog lub luag haujlwm rau qhov tsis zoo ntawm cov kab mob algae.
Ua cas cov eu txwv tsis pub peb khawb dej?
![Ua cas cov eu txwv tsis pub peb khawb dej? Ua cas cov eu txwv tsis pub peb khawb dej?](https://i.tvmoviesgames.com/preview/questions/17929528-do-the-eu-stop-us-dredging-rivers-j.webp)
Nyob rau hauv tsab ntawv tshaj tawm hnub no, pawg thawj coj hais tias: "EU txoj cai lij choj tsis txwv kev khawb av. Daim ntawv qhia dej num (WFD) thiab cov lus qhia txog dej nyab tsis suav nrog cov kev cai ntxaws ntxaws txog yuav ua li cas cov tswv cuab tswj hwm lawv cov chav dej.