2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tab sis lo lus nug no tsis yog lus dag, vim nws yeej muaj lus teb: zebras yog dub nrog kab dawb. … Txij li cov kab txaij dawb tsuas yog tshwm sim vim cov xim tsis pom zoo, cov xim dub tau nkag siab tias yog xim "default" ntawm ib tug zebra. Hauv qab tag nrho cov plaub, zebras muaj tawv dub, ib yam nkaus.
Puas zebras dawb nrog kab txaij dub lossis dub nrog kab dawb?
Puas yog zebras dawb nrog kab txaij dub lossis dawb nrog kab txaij dub? Greg Barsh, MD, PhD, yog tus kws tshaj lij nyob hauv cov tsiaj morphology ntawm HudsonAlpha Institute for Biotechnology, thiab nws muaj cov lus teb meej. "Zebras yog dub nrog dawb kab txaij."
Vim li cas zebras striped dub thiab dawb?
Lub tswv yim tseem ceeb yog cov kab txaij dub yuav nqus cua sov thaum sawv ntxov thiab sov cov nees txaij, qhov kab txaij dawb pom lub teeb ntau dua thiab tuaj yeem pab txias zeb zeb thaum lawv graze ntau teev hauv lub hnub ci ntsa iab.
Puas yog zebras tawv dub thiab dawb?
Piv txwv li, zebra tawv yog dub hauv qab lawv cov tsho dub-thiab-dawb kab txaij. Giraffe daim tawv nqaij yog lub teeb ci tsis zoo uas zoo ib yam li cov xim ntawm nws lub tsho, thiab nws cov qauv tsis pom, Mads Bertelsen, tus kws tshawb fawb cov ntaub ntawv ntawm Denmark's Copenhagen University, hais hauv email. (Nyeem vim li cas zebras muaj kab txaij.)
Puas zebras dub nrog kab txaij dawb lossis dawb nrog kab txaij dub Yahoo Lus Teb?
Txhua cov plaub hau loj hlob los ntawm cov hauv paus hniav uas muaj cov xim-tsim melanocyte hlwb. Tsuas yog li ntawd xwbHauv cov plaub hau dawb, cov melanocytes no deactivated. Qhov no txhais tau tias cov xim dub yog xim xim ntawm cov plaub thiab yog vim li cas feem ntau cov tub ceev xwm thiab cov kws tshaj lij piav qhia zebras li dub nrog kab dawb.
Pom zoo:
Cov kab kab kab kab kab ua kab mob txaus ntshai npaum li cas?
Nyob rau hauv peb thiab tom ntej instars ntawm lawv txoj kev loj hlob, Pine processionary caterpillars yog mob heev rau daim tawv nqaij ntawm tib neegthiab lwm yam tsiaj. Kev sib cuag yooj yim nrog cov plaub hau ntawm kab ntsig tuaj yeem ua rau pob khaus hnyav (urticaria) thiab khaus qhov muag, thiab qee tus neeg yuav muaj kev fab tshuaj.
Thaum twg yog cov noog dub dub uas tau teev tseg tias muaj kev puas tsuaj?
Lub Tricolored Blackbird yog suav nrog 2014 Lub Xeev Ntawm Cov Noog Saib. Twb tau teev tseg tias Kev Tiv Thaiv Kab Mob Los ntawm IUCN-World Conservation Union, cov tsiaj yog tam sim no tus neeg sib tw rau npe nyob rau hauv US Endangered Species Act (ESA), nrog rau California lub xeev ESA.
Puas yog tus neeg tua dub lossis qia dub?
Raws lub npe qhov txawv ntawm blaggard thiab blackguard yog tias blaggard yog (dated) ib tug neeg phem; ib tug neeg tsis paub txaj muag; ib tug neeg tsis ntseeg siab feem ntau, tsuas yog siv los hais rau ib tug txiv neej thaum tus neeg saib xyuas dub yog (hnub tim) tus neeg phem;
Puas yog ob kab nrog txoj kab nqes zoo tuaj yeem txuas ntxiv?
tsis ua tau rau obkab nrog qhov zoo nqes kom ua rau ib leeg. Yuav ua li cas 2 kab nrog qhov nqes qhov tsis zoo tuaj yeem ua rau perpendicular? Yog tias txoj kab nqes ntawm ob kab yog tsis zoo sib xws, cov kab yog perpendicular. vim lawv qhov nqes hav ntawm 0 muaj undefined reciprocals.
Puas yog cov tshuaj tua kab puas tuaj yeem sib xyaw nrog tshuaj tua kab ua ke?
Nws tuaj yeem sib tov qee cov tshuaj tua kab thiab cov tshuaj tua kab mob hauv tib yam tshuaj tsuag, tab sis koj yuav tsum xub nyeem cov ntawv cim khoom thiab / lossis ua qhov sib xyaw ua ke. Koj puas tuaj yeem sib xyaw cov tshuaj tua kab nrog tshuaj tua kab?
