2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Sharks yog "cov ntshav txias" (poikilothermic) tsiaj, txhais tau tias lawv lub cev kub yog tib yam li cov dej uas lawv nyob. … Lub network no pab txuag cov cua sov hauv lub cev, tsis yog tso cai rau nws mus rau hauv dej txias dua.
Vim li cas sharks txias ntshav?
Puas yog sharks sov lossis ntshav txias? Feem ntau sharks, zoo li feem ntau ntses, yog ntshav txias, los yog ectothermic. Lawv lub cev kub sib xws nrog qhov ntsuas kub ntawm cov dej nyob ib puag ncig lawv. … Tus ntses dawb muaj peev xwm tswj tau nws lub plab kub npaum li 57ºF (14ºC) sov dua li qhov kub ntawm dej.
sharks tswj lawv lub cev kub li cas?
Lamid sharks, xws li cov dawb dawb thiab mako, nquag tswj lawv qhov kub thiab txias tuaj yeem ncav cuag 20 degrees siab dua lawv qhov chaw nyob ib puag ncig. Lawv ua li no los ntawm kev npaj tshwj xeeb ntawm cov hlab ntsha. Cov ntshav txias oxygenated nkag mus rau hauv cov gills thiab dhau los ntawm cov hlab ntsha sov deoxygenated.
Puas yog cov dawb sharks Homeothermic?
The Great White Shark thiab Mako Shark yog piv txwv ntawm homeotherms. Qee tus sharks thiab lwm cov ntses tseem tuaj yeem khaws qee qhov chaw ntawm lawv lub cev (xws li lawv lub qhov muag thiab lub hlwb) sov dua li lwm tus kom lawv txoj haujlwm tsis sib tham txawm tias thaum lawv cov leeg thiab cov metabolism qeeb.
Yuav ua li cas shark ntshav txias?
Muajsharks yog ntshav txias. Ib txhia, zoo li Mako thiab lub Great dawb shark, yog ib nrab ntawm cov ntshav sov (lawv yog endotherms). Cov sharks no tuaj yeem nce lawv qhov kub ntawm qhov kub ntawm cov dej; lawv yuav tsum muaj qee lub sijhawm luv luv ntawm kev yos hav zoov.
Pom zoo:
Puas pom qhov tseem ceeb yog vim li cas lossis vim li cas ho tsis?
Kev sib txuas lus pom kev pab cov neeg tuaj saib nkag siab cov ntaub ntawv. Nws ua rau kom nkag siab txog cov ntsiab lus. Hom duab ob sab uas pab kev sib txuas lus muaj xws li kos duab, kos duab kos duab, animation, kos npe, typography, graphic designs, thiab lwm yam.
Puas yog qhov sharecropping system zoo vim li cas lossis vim li cas ho tsis?
-Sharecropping raws li keeb kwm kev coj ua nyob rau hauv American Soutic yog ntawm cov tswv yim qhev, txawm tias tsawg dua li niaj hnub ua liaj ua teb. Vim li cas thiaj tau sharecropping tsis ua haujlwm? Sharecropping khaws cia dub neeg txom nyem thiab nyob rau hauv ib txoj hauj lwm uas lawv tau zoo nkauj npaum li cas lawv tau hais los ntawm tus tswv av lawv ua haujlwm.
Thaum siv vim li cas thiab yog vim li cas?
Vim li cas thiab qhov twg ntawm qee yam yog vim li cas rau nws. Txawm tias cov thawj coj ua tiav yuav tsum tau nug txog vim li cas thiab yog li ntawd ntawm lawv qhov kev ua. Nws tsis txaus siab tham txog vim li cas thiab yog li ntawd nws lub sijhawm nyob txawv teb chaws.
Ntev npaum li cas sharks tuav lawv cov pa hauv qab dej?
Sharks ua tsis taus pa ntawm av vim lawv tsis muaj ntsws. Lawv yuav tsum tau tso dej hla lawv cov gills kom tau oxygen thiab ua pa. Txawm li cas los xij, lawv tuaj yeem muaj sia nyob qee feeb mus rau teev ntawm thaj avnyob ntawm qhov xwm txheej puag ncig nws lossis hom shark.
Vim li cas volcanoes tawg nws xav tias yog vim li cas?
Volcanic eruptions tshwm sim thaum cov pa roj npuas hauv magma, los yog cov pob zeb ua kua kub, nthuav thiab ua rau lub siab tsim. Lub siab no thawb rau ntawm qhov chaw tsis muaj zog hauv lub ntiaj teb, lossis pob zeb, ua rau magma tawm ntawm lub roob hluav taws.
