Video: Puas yog Mark thiab recapture yog lawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Assumption: Cov raug ntawm no cim - rov qab txoj kev so ntawm ntau qhov kev xav tau ua tiav. Assumption 1. Kev yug me nyuam tseem tuaj yeem tshwm sim thiab ib qho raug Kev kwv yees tseem tuaj yeem ua tau tsuas yog tias muaj pes tsawg tus neeg tsis muaj npe tawm mus (lossis tuag) thiab yug.
Tom qab ntawd, dab tsi yog qhov zoo thiab qhov tsis zoo ntawm txoj kev capture mark recapture?
Lawv muab cov qhov zoo tias qhov tseeb tsis yog nyob ntawm qhov ntsuas ntawm qhov chaw nyob; lawv qhov tsis zoo yog qhov tseeb nyob ntawm ntes ib feem loj ntawm cov pejxeem.
Tom qab ntawd, lo lus nug yog, vim li cas thiaj li rov qab tau zoo? Mark thiab rov qab yog ib txoj kev uas feem ntau siv nyob rau hauv ecology los kwv yees tus tsiaj cov pej xeem qhov loj qhov twg nws yog impractical los suav txhua tus neeg. Ib feem ntawm cov pejxeem raug ntes, cim , thiab tso tawm. Cov txheej txheem yog qhov tseem ceeb tshaj plaws thaum nws tsis siv los suav tag nrho cov tib neeg hauv cov pej xeem.
Ib yam li ntawd, koj tuaj yeem nug, Mark rov qab ua haujlwm li cas?
Cov Mark - Rov qab cov txheej txheem yog siv los kwv yees qhov loj ntawm cov pej xeem uas nws yog inractical los suav txhua tus neeg. Lub tswv yim tseem ceeb yog tias koj ntes cov neeg tsawg tsawg, muab qhov tsis zoo cim ntawm lawv, thiab tso lawv rov qab rau hauv cov pejxeem. Mark ntau tus neeg thiab sim dua.
Hauv qhov xwm txheej twg yuav cim thiab rov qab ua haujlwm tau zoo tshaj?
Piav li cas random sampling ua haujlwm thiab thaum twg yog qhov qhov xwm txheej zoo tshaj plaws siv nws? Nws yog siv nyob rau hauv peb xwm txheej , thaj chaw zoo sib xws, thaj chaw loj heev, lossis lub sijhawm txwv muaj.
Pom zoo:
Qhov twg yog New seafloor puas lawm?
Ib qho chaw nto moo tshaj plaws yog hu ua Mid-Atlantic Ridge thiab nws khiav mus rau sab qaum teb mus rau sab qab teb raws nruab nrab ntawm Dej Hiav Txwv Atlantic. Yog li tshiab dej hiav txwv crust yog tsim nyob rau hauv 'middle' oceans nyob rau hauv Mid Ocean Ridges, thiab nws tau puas lawm qhov twg dej hiav txwv crust ntsib lwm tectonic ciam teb thiab subducts
Yuav ua li cas yog tias cov nroj tsuag tsis muaj lawm?
Yog tias tsis muaj photosynthesis, cov nroj tsuag thiab tsiaj tej zaum yuav tsis muaj nyob. Tsis tas li ntawd, cov huab cua yuav muaj oxygen tsawg heev vim tias photosynthesis tso tawm ntau cov pa oxygen rau hauv cov huab cua. Txwv tsis pub, Lub Ntiaj Teb yuav yog qhov chaw zoo nkauj uas tsis muaj sia nyob tsis muaj photosynthesis
Yuav ua li cas yog ib yam dab tsi tsis ncaj ncees lawm thaum lub sij hawm mitosis?
Kev hloov pauv hauv Chromosome Number Nondisjunction yog qhov tshwm sim ntawm kev ua tsis tiav ntawm chromosomes cais thaum lub sij hawm mitosis. Qhov no ua rau cov hlwb tshiab nrog cov chromosomes ntxiv lossis ploj lawm; ib qho mob hu ua aneuploidy. Rau cov me nyuam yug los nrog aneuploidy, mob caj dab hnyav tshwm sim
Yuav ua li cas yog lub nucleolus puas lawm?
Yog hais tias lub nucleus tsis muaj nyob, lub cell yuav tsis muaj kev taw qhia thiab lub nucleolus, uas nyob rau hauv lub nucleus, yuav tsis muaj peev xwm tsim ribosomes. Yog tias lub cell membrane tau ploj mus, lub cell yuav raug tiv thaiv. Txhua yam yuav ua rau lub cell tuag. Yuav ua li cas yog tias cov cell tsis muaj organelles?
Dab tsi yog 3 lub ntsiab lus uas ploj lawm hauv daim ntawv teev sijhawm?
Tom qab ntawd nws tau pom tias yog gallium. Gallium, germanium, thiab scandium yog tag nrho cov tsis paub nyob rau hauv 1871, tab sis Mendeleev tshuav qhov chaw rau txhua tus thiab kwv yees lawv cov atomic masses thiab lwm yam tshuaj. Tsis pub dhau 15 xyoos, cov ntsiab lus "tsis ploj" tau pom, ua raws li cov yam ntxwv tseem ceeb Mendeleev tau sau tseg