Ntxhw puas muaj udders?

Cov txheej txheem:

Ntxhw puas muaj udders?
Ntxhw puas muaj udders?
Anonim

Ntxhais mammary qog nyob nruab nrab ntawm lawv lub forelimbs, es tsis yog nruab nrab ntawm lawv hindlimbs zoo li udder. Yog li yeej ntxhw muaj boob thiab!

ntxhw puas muaj tib neeg lub mis?

EleFact: Tsis zoo li lwm yam tsiaj txhu (tshwj tsis yog primates), tus laus poj niam ntxhw muaj ob lub mis nyob nruab nrab ntawm lawv lub forelegs, uas zoo li tib neeg lub mis.

Pob cov maum ntxhw puas muaj udders?

Poj niam ntxhw tsis muaj kab ke, zoo li miv lossis dev. Lawv tsis dag ntawm lawv ib sab, nqus ib lub litter.

poj niam ntxhw nyob qhov twg?

Tej nyuj ntxhw, tsis zoo li cov tsiaj txhu feem ntau, yog nyob nruab nrab ntawm nws ob txhais ceg pem hauv ntej, ib yam li tib neeg, primates thiab whales. Txhawm rau ua kom tus menyuam mos muaj qhov chaw mos thaum nws nkag mus rau lub ntiaj teb, tus niam qhov chaw mos qhib tsis yog hauv qab ntawm nws tus Tsov tus tw tab sis ntawm nws ob txhais ceg.

Vim li cas ntxhw dhia tsis tau?

Txawm tias koj yuav pom dab tsi hauv koj cov duab kos duab hnub Saturday sawv ntxov, ntxhw dhia tsis tau, raws li cov yeeb yaj kiab los ntawm Smithsonian. … Tsis zoo li cov tsiaj nyeg feem ntau, cov pob txha ntawm ntxhw ceg yog taw qhia downwards, uas txhais tau tias lawv tsis muaj "caij nplooj ntoos hlav" yuav tsum thawb tawm hauv av.

Pom zoo:

Nthuav cov khoom
Puas talcum hmoov yaj hauv dej?
Nyeem ntxiv

Puas talcum hmoov yaj hauv dej?

Talc yog xyaum insoluble hauv dej, dilute ntxhia acids, thiab dilute daws ntawm alkali halides thiab alkaline hydroxides. Nws yog soluble hauv kub concentrated phosphoric acid. Vim li cas talcum hmoov tsis yaj hauv dej? Tsim Hauv Tsev.

Vim li cas thiaj siv schlieren photography?
Nyeem ntxiv

Vim li cas thiaj siv schlieren photography?

Schlieren kev yees duab yog txheej txheem pom kev uas yog siv los yees duab cov dej ntws ntawm qhov sib txawv. Tsim los ntawm German physicist lub yim hli ntuj Toepler nyob rau hauv 1864 los kawm supersonic motion, nws yog dav siv nyob rau hauv aeronautical engineering los yees duab cov ntws ntawm huab cua nyob ib ncig ntawm cov khoom.

Yuav rov hais dua email li cas?
Nyeem ntxiv

Yuav rov hais dua email li cas?

Koj tuaj yeem sim: "Kuv tab tom ua raws li hauv qab no" lossis "Ua raws li qhov no [thov / nug / haujlwm]" "Kuv rov qab rau hauv qab no" lossis "Circling rov qab rau ntawm no [thov / nug / assignment]