Video: Yuav ua li cas tshwm sim rau lub mammoth uas tau pom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov tseeb, tus tsiaj no yog qhov zoo tshaj plaws-preserved specimen ntawm woolly mammoth puas tau pom - uas nws prehistoric prime yog 39,000 xyoo dhau los. Txawm tias clumps ntawm tus tsiaj qhov txawv cov plaub hau yog remarkably zoo tom qab raug daig nyob rau hauv glacial ice kom txog thaum nws yog. nrhiav pom Nyob rau hauv Siberia xyoo dhau los.
Khaws qhov no rau hauv kev txiav txim siab, lawv puas tau pom ib lub mammoth khov?
Ib tug khaws cia tag nrho-loj hlob woolly mammoth nrog cov ntshav ntws tau pom thawj zaug, daig hauv cov dej khov Siberian, cov kws tshawb fawb tau hais. Cov kws tshawb fawb Lavxias ua qhov kev tshawb pom thaum lub sijhawm khawb ntawm 50-60-xyoo-laus poj niam tsiaj ntawm Lyakhovsky Islands, hauv Arctic hiav txwv ntawm lub teb chaws sab qaum teb-sab hnub tuaj.
Kuj Paub, leej twg pom tus mammoth? Thaum khov woolly mammoth Cov pob txha tau raug khawb los ntawm cov neeg European thaum ntxov li xyoo 1728, thawj cov ntaub ntawv sau tseg tag nrho yog nrhiav pom Nyob ze ntawm lub delta ntawm tus dej Lena hauv xyoo 1799 los ntawm Ossip Schumachov, tus neeg yos hav zoov Siberian. Schumachov cia nws thaw kom txog thaum nws tuaj yeem khaws cov kaus mom mus muag rau kev lag luam ivory.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi tshwm sim rau lub mammoth?
Tib neeg yos hav zoov mammoths rau lawv cov nqaij, pob txha thiab tawv nqaij. Qee cov kws tshawb fawb ntseeg tias qhov chaw nyob tsis zoo vim yog kev hloov pauv huab cua, ua ke nrog kev sib cuag thiab kev yos hav zoov ntau ntxiv los ntawm tib neeg thaum lawv nkag mus rau lawv thaj chaw ntawm thaj chaw nyob ua rau lawv qhov kawg ploj mus.
Nyob qhov twg woolly mammoth pom?
Cov woolly mammoth yog me me thiab tau piav qhia tias yog "pygmy," tsuas yog xya-taw siab. Woolly mammoths Qhov nruab nrab nruab nrab ntawm 9 thiab 11 feet siab, nrog qee qhov nce mus txog 15 feet hauv qhov siab, raws li TED. Qhov no mammoth yog pom Hauv Siberia ntawm Kotelny kob thiab tuaj yeem muaj hnub nyoog 50,000 xyoo, raws li cov kws tshaj lij.
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
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