Video: Yuav ua li cas tshwm sim hauv ib cheeb tsam tuag?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov chaw tuag yog cov pa oxygen tsawg, lossis hypoxic, thaj chaw hauv ntiaj teb cov dej hiav txwv thiab cov pas dej. Yog vim li cas cov cheeb tsam no hu ua thaj chaw tuag . Cov chaw tuag tshwm sim vim yog txheej txheem hu ua eutrophication, uas tshwm sim Thaum lub cev ntawm cov dej tau txais ntau cov as-ham, xws li phosphorus thiab nitrogen.
Tsis tas li ntawd, dab tsi ua rau thaj chaw tuag?
Cov chaw tuag yog cov cheeb tsam hypoxic (low-oxygen) hauv ntiaj teb cov dej hiav txwv thiab cov pas dej loj, tshwm sim los ntawm "cov khoom noj muaj kuab paug ntau dhau los ntawm tib neeg cov dej num ua ke nrog rau lwm yam uas ua rau cov pa oxygen xav tau los txhawb cov neeg hauv hiav txwv feem ntau hauv qab thiab ze-hauv qab dej. (NOAA) ".
Cov chaw tuag tuaj yeem rov qab los? Ib txhais tes ntawm 166 thaj chaw tuag Txij li thaum rov qab los ntawm kev txhim kho kev tswj cov dej phwj tuaj thiab kev ua liaj ua teb, tab sis raws li kev siv chiv thiab kev ua liaj ua teb ua liaj ua teb, peb tab tom tsim thaj chaw tuag ceev tshaj qhov tuaj yeem rov qab tau.
Ua raws li qhov no, koj yuav kho qhov chaw tuag li cas?
- Kev yeem tso tseg cov chiv thiab cov khib nyiab pov tseg rau hauv pas dej, dej, thiab cov kwj deg.
- Tsim kev cai lij choj los tiv thaiv cov chiv thiab cov khib nyiab los ntawm kev nkag mus rau hauv Mississippi River phiab.
- Tsim cov chaw kho dej kom tiv thaiv tib neeg thiab tsiaj pov tseg los ntawm peb cov dej.
Cov chaw tuag cuam tshuam li cas rau tib neeg?
Cov chaw tuag yog thaj chaw ntawm cov dej hauv dej uas cov dej hauv dej tsis tuaj yeem muaj sia nyob vim tias cov pa oxygen tsawg. Kev puas tsuaj algal tuaj yeem tshwm sim hauv pas dej, pas dej, dej ntws, pas dej, bays thiab ntug dej hiav txwv, thiab cov co toxins uas lawv tsim tuaj yeem ua rau muaj kev phom sij. tib neeg kev noj qab haus huv thiab dej nyab lub neej.
Pom zoo:
Yuav ua li cas tshwm sim rau tam sim no nyob rau hauv ib tug parallel circuits thaum ntxiv qhov muag teev?
Raws li ntau qhov muag tau ntxiv, qhov tam sim no nce. Raws li ntau resistors ntxiv nyob rau hauv parallel, tag nrho tam sim no lub zog nce. Yog li ntawd, tag nrho cov tsis kam ntawm Circuit Court yuav tsum tau txo. Qhov tam sim no nyob rau hauv txhua lub teeb yog tib yam vim hais tias tag nrho cov qhov muag teev glowed nrog tib brightness
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Yuav ua li cas koj pom qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug?
Txhawm rau xam qhov tshwm sim ntawm qhov tshwm sim tshwm sim tsawg kawg ib zaug, nws yuav yog qhov sib ntxiv ntawm qhov xwm txheej tsis tshwm sim. Qhov no txhais tau hais tias qhov tshwm sim ntawm qhov tshwm sim yeej tsis tshwm sim thiab qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug yuav sib npaug, lossis 100% txoj hauv kev
Yuav ua li cas cov ntaub ntawv nyob rau hauv cov cheeb tsam uas oceanic daim hlau diverge thiab tshiab seafloor yog tsim abyssal plains continental txee continental txoj kab nqes mid hiav txwv ridge?
Lub continental txoj kab nqes thiab nce yog hloov pauv ntawm crustal hom, thiab lub abyssal plain yog underlain los ntawm mafic oceanic crust. Oceanic ridges yog diverging phaj ciam teb qhov twg dej hiav txwv lithosphere tshiab tsim thiab dej hiav txwv trenches yog converging phaj ciam teb uas dej hiav txwv lithosphere yog subducted
Yuav ua li cas koj pom lub hauv paus cheeb tsam ntawm daim duab peb sab prism?
Ib daim duab peb sab prism muaj peb lub duab plaub sab thiab ob lub ntsej muag daim duab peb sab. Txhawm rau nrhiav thaj tsam ntawm lub kaum sab xis, siv tus qauv A = lw, qhov twg A = thaj tsam, l = ntev, thiab h = qhov siab. Txhawm rau nrhiav thaj tsam ntawm daim duab peb sab, siv cov qauv A = 1/2bh, qhov twg A = thaj tsam, b = puag, thiab h = qhov siab