Muaj peb hom pob zeb: igneous, sedimentary, thiab metamorphic. Igneous pob zeb tsim thaum molten pob zeb (magma los yog lava) txias thiab solidifies. Cov pob zeb sedimentary originates thaum hais tawm ntawm dej los yog huab cua, los yog los ntawm nag lossis daus ntawm cov minerals los ntawm dej. Lawv sau nyob rau hauv txheej
VIDEO Hais txog qhov no, tag nrho thaj chaw ntawm lub pyramid yog dab tsi? Cov Qhov chaw ntawm lub Pyramid Thaum txhua sab ntsej muag zoo ib yam: [Paj Thaj chaw ] + 1 / 2 × Perimeter × [Slant Length] Ib tug kuj yuav nug, ua li cas koj nrhiav tau qhov chaw ntawm ib tug kheej kheej?
Phenol liab yog qhov ntsuas ph uas yuav yog txiv kab ntxwv ntawm. Phenol liab yog pH qhia tias yuav yog txiv kab ntxwv ntawm nruab nrab pH; daj nyob rau hauv acidic ib puag ncig thiab tsaus liab nyob rau hauv ib puag ncig yooj yim
Feem ntau tornadoes tshwm sim nyob rau sab qaum teb ntawm lub xeev, tab sis lawv tuaj yeem tshwm sim ntxiv rau sab qab teb thiab. Tornadoes hauv California feem ntau tshwm sim sab nraum cov chaw pej xeem, thiab tsis muaj zog npaum li lawv nyob hauv lwm qhov ntawm lub tebchaws
Ib yam khoom qhov ntom yog qhov piv ntawm qhov hnyav rau qhov ntim ntawm ib qho khoom. Qhov loj yog ntau npaum li cas nws resists acceleration thaum lub zog siv rau nws thiab feem ntau txhais tau tias ntau npaum li cas ntawm cov khoom los yog cov khoom muaj. Volume piav qhia qhov chaw ntau npaum li cas qhov khoom siv
Nyob rau hauv lub cell division voj voog ntawm budding poov xab, START yog hais txog ib tug txheej ntawm nruj txuas cov txheej xwm uas npaj ib lub cell rau budding thiab DNA replication, thiab FINISH qhia txog cov xwm txheej interrelated uas lub cell tawm ntawm mitosis thiab faib mus rau hauv niam thiab cov ntxhais hlwb
Lub luag haujlwm tag nrho ntawm cov tshuaj tiv thaiv lub teeb, thawj theem ntawm photosynthesis, yog hloov lub hnub ci zog rau hauv cov tshuaj siv hluav taws xob nyob rau hauv daim ntawv ntawm NADPH thiab ATP, uas yog siv nyob rau hauv lub teeb-yooj yim tshuaj tiv thaiv thiab roj sib sau ua ke ntawm qab zib molecules
Tool: Interactive Periodic Table. Orbitals thiab Electrons. Lub orbital yog ib cheeb tsam ntawm qhov tshwm sim uas cov electron tuaj yeem pom. Cov cheeb tsam no muaj cov duab tshwj xeeb, raws li lub zog ntawm cov hluav taws xob uas yuav nyob hauv lawv
Cov nroj tsuag lub neej voj voog pib thaum lub noob poob rau hauv av. Cov theem tseem ceeb ntawm lub paj lub neej voj voog yog cov noob, germination, kev loj hlob, kev loj hlob, pollination, thiab noob kis theem. Noob theem. Cov nroj tsuag lub neej voj voog pib nrog cov noob; txhua lub noob muaj cov nroj tsuag me me hu ua embryo
Liab lava pob zeb. Lub Pob Zeb Liab Lava, tseem hu ua Volcanic Pob Zeb, yog lub pob zeb zoo nkauj thiab cov qauv alveolar. Nws muaj peev xwm nqus tau dej yog li nws tau siv dav hauv cov vaj, nyob ib puag ncig cov ntoo thiab cov nroj tsuag, vim nws khaws cov dej noo, txo qhov xav tau ntawm cov dej thiab ua kom lub neej ntev