Video: Yuav ua li cas koj thiaj paub tias ob yam kab mob yog tib hom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntsiab lus tseem ceeb. Raws li kev lom neeg hom tswvyim, kab mob belongs rau lub tib hom yog lawv muaj peev xwm interbreed kom tsim tau, fertile offspring. Hom yog sib cais los ntawm ib leeg los ntawm prezygotic thiab postzygotic teeb meem, uas tiv thaiv mating los yog zus tau tej cov zoo, fertile offspring.
Ib yam li ntawd, nws raug nug, hom kab li cas?
A hom feem ntau txhais tau tias yog pawg loj tshaj plaws ntawm cov kab mob uas ob tus neeg ntawm cov poj niam uas tsim nyog los yog mating hom tuaj yeem tsim cov xeeb ntxwv, feem ntau yog los ntawm kev sib deev. Lwm txoj hauv kev los txhais hom suav nrog lawv cov karyotype, DNA sib lawv liag, morphology, tus cwj pwm lossis ecological niche.
pes tsawg hom kab mob muaj tib hom? Hom , hauv biology, kev faib ua feem muaj feem kab mob uas qhia tej yam ntxwv thiab yog muaj peev xwm ntawm interbreeding. Qhov no lom hom tswvyim yog siv dav hauv biology thiab lwm yam kev kawm. Nyob ntawd yog ntau tshaj 20 lwm yam txawv hom tswvyim, txawm li cas los xij.
txhais tau tias yog tib hom?
A hom yog feem ntau txhais tau tias yog ib pawg ntawm cov tib neeg uas ua tau los yog muaj feem cuam tshuam rau hauv qhov xwm txheej. Piv txwv li, cov kab laug sab ntsej muag zoo siab no zoo li txawv, tab sis txij li lawv ua tau interbreed, lawv yog suav tias yog tib hom : Theridion grallator.
Qhov piv txwv ntawm ib hom yog dab tsi?
Lub ntsiab txhais ntawm a hom yog ib pawg tsiaj, nroj tsuag lossis lwm yam muaj sia uas txhua tus muaj cov yam ntxwv zoo sib xws thiab txhua tus tau muab cais ua ib yam li qee yam. Ib piv txwv ntawm ib hom yog txhua tus tib neeg. YourDictionary txhais thiab siv piv txwv.
Pom zoo:
Yuav ua li cas koj thiaj paub tias ib yam dab tsi muaj nuj nqi los yog tsis?
LUS TEB: Cov lus teb piv txwv: Koj tuaj yeem txiav txim siab seb txhua lub ntsiab lus ntawm lub npe yog ua ke nrog ib qho ntawm qhov ntau. Piv txwv li, yog tias muab ib daim duab, koj tuaj yeem siv qhov ntsuas kab ntsug; Yog hais tias ib txoj kab ntsug hla cov duab ntau dua ib zaug, ces qhov kev sib raug zoo uas cov duab sawv cev tsis yog ib qho haujlwm
Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?
Peb tsuas yog tshawb xyuas qhov sib npaug. Yog hais tias, degree ntawm kev sib npaug sib npaug rau 2 ces tsuas yog nws yog ib qho kev sib npaug. Degree ntawm equation yog 2. Yog li ntawd, nws yog ib tug Quadratic Equation
Yuav ua li cas koj thiaj paub tias ib yam dab tsi yog ib yam khoom dawb huv los yog sib tov?
1. Cov tshuaj dawb huv tsis tuaj yeem muab cais ua lwm yam teeb meem, thaum sib xyaw yog sib xyaw ntawm ob lossis ntau dua cov khoom ntshiab. 2. Cov khoom ntshiab muaj lub cev tsis tu ncua thiab tshuaj lom neeg, thaum cov khoom sib xyaw muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg (piv txwv li, qhov kub thiab txias)
Yuav ua li cas koj thiaj paub yog tias koj lub tsev nyob rau hauv lub dab dej?
Ntawm no yog 7 lub cim qhia ntau tshaj plaws hauv lub dab dej yuav tshwm sim: Ib puag ncig kev nyuaj siab nyob rau hauv lub ntiaj teb: Localized subsidence los yog kev nyuaj siab nyob txhua qhov chaw ntawm lub tsev: Lub pas dej ncig (los yog lub pas dej loj, tob): Lub hauv paus daws teeb meem: Kev tawg ntawm txoj kev lossis pavement : Cia li poob ntawm qhov dej hauv qhov chaw:
Yuav ua li cas koj thiaj paub yog tias ib yam khoom tsoo hauv av?
VIDEO Tsis tas li ntawd, yuav ua li cas thaum ib yam khoom tsoo hauv av? Thaum lub yam khoom tsoo hauv av , lub zog kinetic yuav tsum mus rau qhov chaw, vim hais tias lub zog tsis yog tsim los yog puas, tsuas yog pauv mus. Yog hais tias kev sib tsoo yog elastic, lub ntsiab lus khoom tuaj yeem bounce, ntau lub zog nkag mus rau hauv ua kom nws rov qab los dua.