Txij li cov kab mob 'hlwb tsuas tuaj yeem ua haujlwm tau zoo hauv qhov ntsuas kub tsawg, homeostasis tseem ceeb rau kev ciaj sia ntawm txhua yam kab mob. Cellscan ua haujlwm A. ntawm txhua qhov kub thiab pH
Hauv cov ntsiab lus, cov tshuaj tiv thaiv tshuaj yog cov txheej txheem uas hloov ib lossis ntau yam rau lwm yam khoom. Cov tshuaj tiv thaiv tshuaj pib nrog reactants thiab hloov mus rau hauv cov khoom
Tshuaj yej tsob nroj tuaj yeem loj hlob siv cov noob thiab txiav, nws yog hu ua vegetative propagation. Cov nroj tsuag tsa los ntawm cuttings yog hu ua clonal seedlings. Lawv yeej muaj tseeb rau hom thiab muaj tib yam zoo li ntawm lawv niam cov nroj tsuag. Clonal seedlings propagation yog nqa tawm los ntawm kev siv ib leeg nplooj internodes cuttings
Nyob rau hauv parapatric speciation, ob subpopulations ntawm ib hom evolve reproductive cais ntawm ib leeg thaum txuas ntxiv mus pauv cov noob. Parapatry yog thaj chaw faib tawm tawm tsam sympatry (ib cheeb tsam) thiab allopatry lossis peripatry (ob qhov xwm txheej zoo sib xws ntawm thaj chaw sib txawv)
Lub seismogram yog cov kab wiggly uas sau cov kev vibrations tshwm sim los ntawm av qeeg ntawm ib qho chaw kaw cia. Nrhiav cov ntaub ntawv no ntawm lub screenshot, tom qab ntawd sau cov ntaub ntawv muab rau hauv kab hauv qab no: kab hauv qab no qhia koj qhov kev ncua deb ntawm av qeeg mus rau qhov chaw kaw hauv qib
Kev ua qauv qhia txog kev ua tus sawv cev ntawm ib yam dab tsi. Tsim kom muaj me me, ua haujlwm hluav taws xob yog ib qho piv txwv ntawm kev tsim qauv. Cov kws qhia ntawv siv tus qauv thaum lawv muaj kev xaiv tsa hauv chav kawm uas sawv cev loj dua, zoo li kev xaiv tsa thawj tswj hwm. Kev ua qauv yog txhua yam uas sawv cev rau lwm yam, feem ntau ntawm qhov me me
Hauv cov lus, nws tuaj yeem hais tias lub sijhawm quab yuam lub sijhawm sib npaug ntawm qhov loj lub sijhawm hloov ntawm qhov nrawm. Nyob rau hauv physics, lub quantity Force • lub sij hawm hu ua impulse. Thiab txij li qhov ntau m•v yog lub zog, qhov ntau m•Δv yuav tsum yog qhov hloov pauv ntawm lub zog
Thaum cov hlau tsis muaj hlau nplaum yog siv rau cov hlau nplaum, cov atoms nyob rau hauv nws rov kho lawv tus kheej nyob rau hauv ib yam uas tsim ib tug mus tas li hlau nplaum. Raws li cov atoms ua kom haum, lawv tsim ib qho chaw sib nqus uas tsis poob nws lub zog. Yuav kom tsim tau ib qho chaw sib nqus, ib qho khoom atoms yuav tsum tau ua kom zoo
Hauv cov xwm txheej ntxhov siab xws li drought thiab kub siab, cov nroj tsuag ntawm tes chloroplasts tuaj yeem ua rau puas tsuaj thiab tsim cov kab mob tsis zoo rau cov pa oxygen (ROS)
Lub ntsiab txhais ntawm daim duab peb sab yog ib daim duab nrog peb lub kaum sab xis thiab peb sab. Ib qho piv txwv ntawm ib yam dab tsi nyob rau hauv daim duab peb sab yog ib daim ntawm pizza
Deposition yog theem hloov pauv uas cov roj hloov mus rau hauv cov khoom tsis dhau los ntawm cov kua theem. Qhov rov qab ntawm deposition yog sublimation thiab li no qee zaum deposition yog hu ua desublimation
Ib qho hluav taws xob muaj peev xwm (tseem hu ua qhov hluav taws xob muaj peev xwm, qhov muaj peev xwm poob lossis qhov muaj peev xwm electrostatic) yog qhov kev ua haujlwm xav tau kom tshem tawm ib chav ntawm tus nqi los ntawm kev siv taw tes rau qhov tshwj xeeb hauv qhov chaw yam tsis muaj kev ua kom nrawm
Lub suab, txawm li cas los xij, tsis tuaj yeem taug kev los ntawm lub tshuab nqus tsev: nws ib txwm yuav tsum muaj qee yam taug kev los ntawm (paub tias yog qhov nruab nrab), xws li huab cua, dej, iav, lossis hlau
Dab tsi ntawm co toxins muaj nyob hauv Cov Dej Siv Dej? Fluoride. Xyoo 1940's ua cov txheej txheem fluoride ntxiv hauv cov dej haus los pab txo cov hniav lwj. Arsenic. Nws yog ib qho muaj zog ua rau mob qog noj ntshav tab sis txawm tias muaj tshuaj lom, nws yog siv rau hauv cov txheej txheem kev lag luam. Chlorine. Cov hlau hnyav (cov hlau lead thiab mercury) PCBs. Tshuaj tua kab thiab tshuaj tua kab mob. MtBE
Deciduous woodlands muaj cov ntoo nrog nplooj dav xws li ntoo qhib, beech thiab elm. Lawv tshwm sim nyob rau hauv cov chaw uas muaj dej nag siab, sov summers thiab txias winters thiab poob lawv nplooj nyob rau hauv lub caij ntuj no
Alkalis yog cov tshuaj caustic uas yaj hauv dej los tsim cov tshuaj nrog pH ntau dua 7. Cov no suav nrog ammonia; ammonium hydroxide; calcium hydroxide thiab oxide; poov tshuaj; poov tshuaj hydroxide thiab carbonate; sodium; sodium carbonate, hydroxide, peroxide thiab silicates; thiab trisodium phosphate
Nplooj yog ib feem ntawm lub crown ntawm tsob ntoo. Lawv yog ib feem ntawm tsob ntoo uas hloov lub zog rau hauv cov zaub mov (qab zib). Nplooj yog cov khoom noj ntawm tsob ntoo. Lawv muaj cov khoom tshwj xeeb hu ua chlorophyll - nws yog chlorophyll uas muab nplooj ntsuab xim
Formic acid (HCO2H) kuj tseem muab cov txiaj ntsig zoo ntawm Fehling qhov kev sim, zoo li nws ua nrog Tollens'test thiab Benedict qhov kev sim. Cov txiaj ntsig zoo tau ua raws li nws tau nkag siab oxidizable tocarbon dioxide
Qhov sib txawv ntawm cov pej xeem yog xam los ntawm: Nrhiav qhov nruab nrab (qhov nruab nrab). Tshem tawm qhov nruab nrab ntawm txhua tus lej hauv cov ntaub ntawv teeb tsa thiab tom qab ntawd sib npaug qhov tshwm sim. Cov txiaj ntsig yog squared los ua qhov zoo tom qab. Nruab nrab ntawm qhov sib txawv squared
Lub emission ntawm gamma rays tsis hloov tus naj npawb ntawm protons los yog neutrons nyob rau hauv lub nucleus tab sis es tsis txhob muaj cov nyhuv ntawm txav lub nucleus los ntawm ib tug siab dua mus rau ib tug qis zog lub xeev (tsis ruaj tsis khov). Gamma ray emission nquag ua raws li beta lwj, alpha lwj, thiab lwm yam txheej txheem nuclear
Taiga Biome Kev Nyab Xeeb Ntawm 64 txog 72 ° F. Thaum lub caij ntuj no -14 ° F Nroj tsuag Coniferous, ntoo thuv, ntoo qhib, maple thiab elm ntoo. Tsiaj txhu Mooses, lynx, bears, wolverines, hma liab, squirrels. Qhov chaw North America thiab Eurasia
Muaj kev nyab xeeb thiab ntuj tsim, Zeolite pob zeb thiab hmoov los ntawm volcanic seem. Lawv tsis yog tshiab, qhov tseeb, Axel Fredrik Cronstedt, kws tshuaj, nrhiav tau lawv nyob rau hauv 1751. Tsis ntev los no lawv tau ua lag luam rau lawv cov khoom tswj tsw ntxhiab
Ions tshwm sim los ntawm atoms los yog molecules uas tau txais los yog poob ib los yog ntau tshaj valence electrons, muab lawv ib tug zoo los yog tsis zoo nqi. Cov uas muaj tus nqi tsis zoo yog hu ua anions thiab cov uas muaj tus nqi zoo yog hu ua cations
Geography ntawm Ireland Continent Europe • Tag nrho 70,273 km2 (27,133 sq mi) • Av 98.2% • Dej 1.8% Coastline 1,448 km (900 mi)
Cov yam ntxwv ntawm cov nroj tsuag uas ib txwm yoog rau cov mob qhuav muaj xws li cov nplooj tuab tuab; nplooj nqaim heev (xws li cov ntawm ntau hom evergreen); thiab plaub hau, spiny, los yog waxy nplooj. Tag nrho cov no yog cov kev hloov pauv uas pab txo cov dej poob ntawm nplooj
Tus nqi hluav taws xob yog ib qho khoom ntawm lub cev ntawm cov khoom los yog cov khoom uas ua rau lawv nyiam los yog tawm tsam ib leeg yam tsis tau kov. Cov khoom uas muaj cov nqi sib txawv nyiam ib leeg. Cov khoom uas muaj xws li tsub nqi sib tw. Lub zog ntawm attraction los yog repulsion yog hu ua hluav taws xob quab yuam
Qhov zoo tshaj plaws hluav taws xob conductor, nyob rau hauv tej yam kev mob ntawm ib tug zoo tib yam kub thiab siab, yog lub metallic ntsiab nyiaj. Cov khoom siv hluav taws xob zoo tshaj plaws yog: Nyiaj. Kub. Tooj. Aluminium. Mercury. Hlau. Hlau. Dej hiav txwv
Cov ntaub ntawv keeb kwm yav dhau. Txhawm rau kom muaj sia nyob, tsiaj xav tau huab cua, dej, zaub mov, thiab chaw nyob (kev tiv thaiv los ntawm cov tsiaj nyeg thiab ib puag ncig); nroj tsuag xav tau huab cua, dej, as-ham, thiab lub teeb. Txhua lub cev muaj nws txoj hauv kev ua kom nws cov kev xav tau yooj yim tau ua tiav
Lo lus polymorphism txhais tau tias muaj ntau hom. Hauv cov lus yooj yooj yim, peb tuaj yeem txhais tau tias polymorphism yog lub peev xwm ntawm cov lus uas yuav tsum tau nthuav tawm ntau tshaj ib daim ntawv. Lub neej tiag tiag piv txwv ntawm polymorphism, ib tug neeg nyob rau tib lub sijhawm tuaj yeem muaj cov yam ntxwv sib txawv. Zoo li ib tug txiv neej tib lub sijhawm yog leej txiv, tus txiv, ua haujlwm
Plasma Membrane Txhais. Lub plasma membrane ntawm ib lub xovtooj ntawm tes yog lub network ntawm lipids thiab cov proteins uas tsim cov ciam teb ntawm cov ntsiab lus ntawm tes thiab sab nraud ntawm lub cell. Nws kuj tseem hu ua cell membrane. Nws yog semi-permeable thiab tswj cov ntaub ntawv uas nkag mus thiab tawm ntawm lub cell
Lawv muaj ntau heev rau lub sij hawm ntev uas tsub zuj zuj ntawm cov nroj tsuag tuag nws thiaj li tsim cov coal txaj loj heev uas yog mined nyob rau hauv Brazil, Is Nrias teb, Australia thiab South Africa thiab kuj pom nyob rau hauv Antarctica
Genetic engineering koom nrog kev siv cov thev naus laus zis DNA recombinant, cov txheej txheem los ntawm DNA ib ntu yog tswj hwm hauv vitro, yog li tsim cov DNA rov ua dua tshiab uas muaj kev sib txuas tshiab ntawm cov khoom siv caj ces
Raws li Model 1 dab tsi plaub txheej txheem tshwm sim hauv ib pawg spectrometer? Ionization, acceleration, deflection, thiab nrhiav kom tau
Thaum thawj theem zog muaj 2 electrons, tom ntej no electrons mus rau theem ob lub zog mus txog rau theem thib ob muaj 8 electrons. Thaum lub zog thib ob muaj 8 electrons, tom ntej no electrons mus rau qib peb lub zog mus txog rau theem peb muaj 8 electrons
Lub taw tes bar yog ib qho kev tso nyiaj ua los ntawm alluvium uas sib sau nyob rau sab hauv khoov ntawm cov kwj dej thiab cov dej ntws hauv qab ntawm txoj kab nqes-tawm. Point bars muaj nyob rau hauv abundance nyob rau hauv mature los yog meandering kwj. Ib qho point bar yog thaj tsam ntawm kev tso nyiaj thaum lub txhab nyiaj txiav yog thaj tsam ntawm kev yaig
Acidic, acid, acidulent, acidulous (adj) ua qaub rau saj. Synonyms: acidic, acrid, acidulent, sulphurous, caustic, iab, iab, acidulous, blistering, acerbic, vitriolic, acerb, sulfurous
Feem ntau, cov khoom txav mus rau hauv txoj kev ncig vim lub caij nplooj ntoos hlav yog lub zog ntawm cov khoom mus rau qhov chaw ntawm txoj kev ncig. Muaj kev tsis sib haum xeeb ntawm lub zog no thiab cov khoom inertia. Yog li ntawd lub caij nplooj ntoos hlav stretches tawm vim hais tias ntawm cov khoom tangential ceev thiab inertia?
Diffraction, polarization, thiab cuam tshuam yog pov thawj ntawm nthwv dej ntawm lub teeb; Cov nyhuv photoelectric yog pov thawj ntawm qhov xwm txheej ntawm lub teeb
Ib lub pas dej ntes tau muaj ib lub grate rau saum thiab cov kav dej uas nqes deb ntawm lub phiab. Lub thawv no tau muab tso rau hauv av ntawm qhov chaw qis ntawm cov cuab yeej. Catch basins pab tswj cov dej kom zoo thiab ntes cov khib nyiab, uas pab tiv thaiv cov kav dej hauv qab kom tsis txhob txhaws. Cov dej thiab cov khib nyiab nkag mus rau hauv lub thawv los ntawm lub grate
Lub laij lej raug suav nrog peb txoj haujlwm trig yog tias nws muaj ib qho: sine, cosine, thiab tangent. Lwm qhov peb uas koj tuaj yeem pom - cosecant, secant, thiab cotangent - yog cov reciprocals ntawm sine, cosine, thiab tangent feem