Lub teb chaws cov pej xeem faib yog txhais tau tias yog qhov sib faib ntawm cov neeg nyob hauv hom cheeb tsam hauv ib lub tebchaws. Cov pej xeem tsis sib npaug ntawm cov cheeb tsam hauv lub tebchaws. Qhov ntsuas no yog ntsuas raws li feem pua ntawm cov pej xeem hauv lub tebchaws
Kev nyeem ntawv sojntsuam raug qhab nia raws li tus lej ntawm cov lus kom raug nyeem, thaum kev sojntsuam lej ntsuas tus lej ntawm cov lej raug. Spelling probes muab credit rau cov ntawv sau kom raug; Kev tshawb nrhiav kev sau ntawv muaj ntau qhov kev xaiv qhab nia, suav nrog tag nrho cov lus sau thiab tus lej ntawm cov lus sau raug
Cov mis rau acyclic saturated hydrocarbons (piv txwv li, alkanes) yog CnH2n + 2. Feem ntau daim ntawv ntawm saturated hydrocarbons yog CnH2n + 2 (1-r), qhov twg r yog tus naj npawb ntawm cov nplhaib. Cov uas muaj ib lub nplhaib yog cov cycloalkanes
Superabsorbent Polymers (SAP): Superabsorbentpolymers feem ntau yog siv los ua cov dej nqus dej thiab cov tshuaj aqueous rau cov pawm, cov khoom siv rau cov neeg laus, cov khoom siv tu cev, thiab cov ntawv thov zoo sib xws
Lub vojvoog ntawm lub ntiaj teb pom tau yog li ntawd kwv yees li 46.5 billion lub teeb-xyoo thiab nws txoj kab uas hla txog 28.5 gigaparsecs (93 billion lub teeb-xyoos, lossis 8.8 × 1026 meters lossis 2.89 × 1027 ko taw) uas sib npaug 880 yottameters
Cua sov ib yam khoom tsis hloov qhov loj ntawm cov khoom, tsuas yog lub ntim. Yog tias qhov loj tsis tas li thiab qhov ntim tau nce, ces qhov ceev yuav txo. Yog hais tias lub ntim txo nrog qhov kub thiab txias, ces qhov ceev yuav nce
Cov kab mob zoo li eukaryotic hlwb nyob rau hauv uas lawv muaj cytoplasm, ribosomes, thiab plasmamembrane.Cov yam ntxwv uas paub qhov txawv ntawm cov kab mob ntawm tes ntawm aeukaryotic cell muaj xws li lub voj voog DNA ntawm thenucleoid, tsis muaj daim nyias nyias organelles, lub cell phab ntsa ntawm peptidoglycan, thiab flagella
ATP yuav tsum muaj rau ntau yam kev lom neeg hauv cov tsiaj xws li; Kev thauj mus los nquag, zais cia, Endocytosis, Synthesis thiab Replication ntawm DNA thiab txav
Qhov tseeb dua, tab sis yooj yim, txhais tau tias yog qhov no: Heritability yog qhov kev faib ua feem ntawm qhov kev hloov pauv tag nrho ntawm cov tib neeg hauv cov pej xeem vim muaj kev hloov pauv caj ces. Tus lej no tuaj yeem nyob ntawm 0 (tsis muaj kev koom tes hauv caj ces) mus rau 1 (txhua qhov sib txawv ntawm tus cwj pwm cuam tshuam txog kev hloov pauv caj ces)
Lub venturi tsim ib qho constriction nyob rau hauv ib tug yeeb nkab (classically ib tug hourglass zoo) uas txawv cov yam ntxwv ntawm cov dej ntws (xws li kua los yog roj) mus los ntawm lub raj. Raws li cov kua dej tawm hauv lub caj pas yog nce ntxiv, qhov kev poob qis hauv qhov siab. Qhov no yog hu ua Venturi Meter
Qhov kev xav ntawm nebular yog ib qho kev piav qhia rau kev tsim cov hnub ci tshuab. Lo lus "nebula" yog Latin rau "huab," thiab raws li kev piav qhia, cov hnub qub yog yug los ntawm huab cua interstellar gas thiab hmoov av
Lub biosphere yog ib feem ntawm lub ntiaj teb uas lub neej tshwm sim - ib feem ntawm av, dej thiab huab cua uas tuav lub neej. Cov seem no paub, feem, raws li lithosphere, hydrosphere thiab cua. Lub hydrosphere yog qhov dej ntawm lub ntiaj teb, txhua yam uas txhawb nqa lub neej
Ntau tshaj 80 hom thiab ntau yam ntawm Salix loj hlob hauv Texas. Willows yog tsob ntoo deciduous lossis shrubs uas tsim loj, ntom hauv paus mats ntawm cov av los yog hauv dej ntiav thiab cov kwj deg qeeb. Cov nplooj ntawm ntau hom yog ntev thiab nqaim, nrog finely toothed npoo
Moles thiab Molar dlaws (unit = M = moles / L) Percent Solutions (% = qhov chaw ib puas los yog grams / 100ml) Hloov los ntawm % tov rau molarity, muab cov % daws los ntawm 10 los qhia cov feem pua cov tshuaj grams / L, ces faib los ntawm tus qauv hnyav
Ceev thiab Kev ntiajteb txawj nqus - Xyaum teeb meem ceev yog loj muab faib los ntawm lub ntim, thiaj li hais tias cov ceev yog 45 g faib los ntawm 15cm3, uas yog 3.0 g / cm3. Qhov ceev yog loj muab faib los ntawm ntim, yog li ntawd qhov ceev yog 60 g muab faib los ntawm 30cm3, uas yog 2.0 g / cm3. Nyob rau hauv rooj plaub no, koj raug nug rau ib pawg, tsis yog qhov ceev
Trifluoroacetic Acid nws tus kheej tsis hlawv. * POISONOUS GASES tau tsim tawm hauv hluav taws, suav nrog Hydrogen Fluoride. * Cov khoom ntim tuaj yeem tawg hauv hluav taws. * Siv cov tshuaj tsuag dej kom cov ntim hluav taws kub hnyiab
Sab hnub tuaj dawb ntoo thuv muaj qhov zoo tshaj plaws ntawm kev loj hlob piv rau lwm hom ntoo thuv thiab tawv ntoo hauv nws cov haiv neeg. Nyob nruab nrab ntawm cov hnub nyoog ntawm 8 thiab 20 xyoo, cov ntoo thuv dawb tau paub tias loj hlob nyob ib ncig ntawm 4.5 feet hauv ib xyoos, thaum 20 xyoo lawv tuaj yeem ncav cuag qhov siab ntawm 40 feet (1, 2)
Cov kws tshawb fawb siv ob lub npe hu ua Binomial Naming System. Cov kws tshawb fawb sau npe tsiaj thiab nroj tsuag siv cov kab ke uas piav qhia txog genus thiab hom kab mob. Thawj lo lus yog genus thiab qhov thib ob yog hom. Thawj lo lus yog capitalized thiab thib ob tsis yog
Sodium iodide (cov tshuaj formula NaI) yog ib qho ionic compound tsim los ntawm cov tshuaj tiv thaiv ntawm sodium hlau thiab iodine. Raws li cov qauv txheej txheem, nws yog xim dawb, dej-soluble khoom muaj xws li 1: 1 sib tov ntawm sodium cations (Na +) thiab iodide anions (I −) nyob rau hauv ib tug siv lead ua lattice
Protons, neutrons, thiab electrons yog peb lub ntsiab subatomic hais pom nyob rau hauv ib lub atom. Protons muaj qhov zoo (+) nqi. Ib qho yooj yim kom nco ntsoov qhov no yog kom nco ntsoov tias ob qho tib si proton thiab zoo pib nrog tsab ntawv 'P.' Neutrons tsis muaj hluav taws xob
Ntsuas qhov ntev thiab qhov dav ntawm lub tsev, thiab muab cov qhov ntev no. Piv txwv li, yog tias koj lub tsev ntsuas sab nrauv yog 80 los ntawm 50 ko taw, square footage rau txhua pem teb yog 4,000 square feet
Lub tsib kab latitude loj yog kab zauv, Tropics ntawm Cancer thiab Capricorn, thiab lub Arctic thiab Antarctic voj voog. Lub Arctic Circle. Lub voj voog Antarctic. Lub Equator. Tropic ntawm Cancer. Tropic ntawm Capricorn
Flamingo willow yog qhov zoo tshaj plaws cog rau hauv av uas moist tab sis zoo-drained, nyob rau hauv ib qho chaw tshav ntuj. Cov nroj tsuag yuav tsim ib qho kev ntxim nyiam arching cwj pwm yog tias sab laug unpruned, tab sis pruning yog tsim nyog los ua kom zoo dua ntawm tri-xim nplooj thiab liab stems. Nws yuav xav tau ntau pruning nyob rau hauv lub xyoo
Messengery RNA (mRNA) Hauv cov tsiaj, cov nroj tsuag thiab cov kab mob fungal, cov lus qhia ua cov proteins thiab cov qauv uas cov proteins tau tsim muaj nyob hauv ob qhov chaw sib txawv. DNA khaws cia rau hauv lub nucleus, thaum cov proteins tau sib sau los ntawm cov amino acids dawb hauv cytoplasm hauv cov qauv hu ua ribosomes
Lub poly-A tail ua rau RNA molecule ruaj khov thiab tiv thaiv nws cov degradation. Tsis tas li ntawd, poly-A tus Tsov tus tw tso cai rau tus tub txib paub tab RNA molecule raug xa tawm los ntawm lub hauv paus thiab muab txhais ua cov protein los ntawm ribosomes hauv cytoplasm
Cov ntaub ntawv ntawm tropism muaj xws li phototropism ( teb rau lub teeb), geotropism ( teb rau lub ntiajteb txawj nqus), chemotropism ( teb rau tej yam khoom), hydrotropism ( teb rau dej), thigmotropism ( teb rau mechanicalstimulation), traumatotropism ( teb rau qhov txhab txhab), thiab galvanotropism (orelectrotropism) teb
Yog lawm. Lub hli, ntawm chav kawm, orbits lub ntiaj teb, uas nyob rau hauv lem orbits lub hnub. Lub ncov ntawm lub hli puv yog thaum lub hli yog opposite lub hnub - 180 degrees deb. Yog li ntawd lub hli puv (thiab lwm lub hli theem) tshwm sim tib lub sijhawm, tsis hais koj nyob qhov twg hauv ntiaj teb
Organic teeb meem muaj xws li cov nroj tsuag lossis tsiaj cov khoom uas rov qab los rau hauv av thiab mus rau hauv cov txheej txheem decomposition. Ntxiv nrog rau kev muab cov as-ham thiab chaw nyob rau cov kab mob nyob hauv cov av, cov organic teeb meem tseem khi cov av rau hauv aggregates thiab txhim kho cov dej tuav cov av
Giant sequoia loj hlob heev vim lawv nyob ntev heev thiab loj hlob sai. Vim tias lawv xav tau cov av zoo, taug kev ncig lub hauv paus ntawm sequoia loj heev tuaj yeem ua rau lawv raug mob, vim nws compacts cov av nyob ib ncig ntawm lawv cov hauv paus hniav ntiav thiab tiv thaiv cov ntoo kom tsis txhob muaj dej txaus
Hom Nroj Tsuag: Plaub Qhov Tseem Ceeb Ntawm Cov Nroj Tsuag Hom Nroj Tsuag. Cov nroj tsuag uas tsis muaj vascular. Bryophytes. Piv txwv Bryophyte. Vascular Nroj Tsuag. Pteridophytes. Pteridophyte Piv txwv. Gymnosperms. Gymnosperm Piv txwv. Angiosperms. Piv txwv Angiosperm
Mercator projection. Mercator projection, hom phiaj xwm phiaj xwm qhia hauv 1569 los ntawm Gerardus Mercator. Nws yog feem ntau piav raws li ib tug cylindrical projection, tab sis nws yuav tsum tau muab los ntawm lej
Raws li lawv cov qauv, muaj peb yam tseem ceeb ntawm cov membrane proteins: thawj ib yog ib qho membrane protein uas yog mus tas li anched los yog ib feem ntawm daim nyias nyias, hom thib ob yog peripheral membrane protein uas tsuas yog ib ntus txuas rau lipid bilayer los yog rau lwm yam. integral proteins, thiab peb
Reactions of Acids and Bases A ntsev yog ib qho nruab nrab ionic compound. Cia peb saib yuav ua li cas cov tshuaj tiv thaiv neutralization ua rau dej thiab ntsev, siv ua piv txwv cov tshuaj tiv thaiv ntawm kev daws teeb meem ntawm hydrochloric acid thiab sodium hydroxide. Tag nrho qhov sib npaug ntawm cov tshuaj tiv thaiv no yog: NaOH + HCl → H2O thiab NaCl
Hauv cov nroj tsuag, cov phab ntsa ntawm tes yog tsim los ntawm cov fibers muaj zog ntawm carbohydrate polymer cellulose. Cellulose yog cov khoom tseem ceeb ntawm paj rwb fiber ntau thiab ntoo, thiab nws yog siv rau hauv daim ntawv tsim. Cov phab ntsa ntawm cov kab mob yog tsim los ntawm cov piam thaj thiab amino acid polymer hu ua peptidoglycan
Qhov txawv ntawm Pattern thiab Sequence yog dab tsi? Pattern yog ib txheej ntawm cov ntsiab lus rov ua dua nyob rau hauv ib qho kev kwv yees. Sequence tsis tas yuav muaj tus qauv. Cov qauv tsis tau txhais tau zoo, tab sis qhov sib lawv liag yog ib lo lus hais txog lej zoo
N. [Drilling Fluids] Ib hom khoom ploj mus (LCM) uas yog qhov ntev, sib luag thiab hloov tau thiab tshwm sim hauv ntau qhov ntau thiab tsawg ntawm fiber ntau. Fiber LCM yog ntxiv rau cov av nkos thiab muab tso rau hauv qhov chaw los pab tiv thaiv cov av nkos poob rau hauv cov pob txha los yog cov cheeb tsam permeable heev
Poplar. Poplar, (genus Populus), genus ntawm qee 35 hom ntoo hauv tsev neeg willow (Salicaceae), ib txwm nyob rau sab qaum teb Hemisphere. Cov hom poplar nyob rau hauv North America tau muab faib ua peb pawg xoob: paj rwb, aspens, thiab balsam poplars
Cov kaum sab hauv yog hu ua Sab hauv cov ces kaum. Cov lej ntawm cov kaum sab hauv ntawm daim duab peb sab yog ib txwm 180 degrees. Lub kaum sab nrauv yog lub kaum sab xis ntawm ib sab ntawm ib qho duab, thiab ib txoj kab txuas ntxiv los ntawm sab tom ntej. Qhov sib npaug ntawm lub kaum sab nrauv thiab nws lub kaum sab hauv uas nyob ib sab kuj yog 180 degrees
Cov khoom hnyav ntawm dej txhais tau hais tias ntau yam sib txawv tuaj yeem yaj hauv nws vim nws qhov polarity. Qhov no tso cai rau cov khoom nqa mus rau hauv cov ntshav thiab cov kua txiv ntawm cov nroj tsuag thaum lawv yaj hauv dej. Nws kuj tseem ua rau dej yog qhov nruab nrab zoo rau cov tshuaj tiv thaiv metabolic
Kev txhais ntawm Txoj Cai Empirical Txoj cai empirical hais tias rau ib qho kev faib tawm, ze li ntawm tag nrho cov ntaub ntawv yuav poob rau hauv peb tus qauv sib txawv ntawm qhov nruab nrab. Txoj cai empirical tuaj yeem muab faib ua peb ntu: 68% ntawm cov ntaub ntawv poob hauv thawj tus qauv sib txawv ntawm qhov nruab nrab