Niaj hnub no lub ntiaj teb muaj ntau limestone tsim ib puag ncig. Lawv feem ntau pom nyob rau hauv cov dej ntiav ntawm 30 degrees sab qaum teb latitude thiab 30 degrees sab qab teb latitude. Limestone yog tsim nyob rau hauv Caribbean Hiav Txwv, Dej Hiav Txwv Khab, Persian Gulf, Gulf of Mexico, nyob ib ncig ntawm Pacific hiav txwv Islands tuaj, thiab nyob rau hauv lub Indonesian archipelago
Cell Shape Txhua hom xovtooj ntawm tes tau hloov kho cov duab uas zoo tshaj plaws rau nws txoj haujlwm. Piv txwv li, cov neuron hauv daim duab hauv qab no muaj qhov ntev, nyias txuas ntxiv (axons thiab dendrites) uas ncav cuag lwm cov paj hlwb. Cov duab ntawm cov qe ntshav liab (erythrocytes) ua rau cov hlwb no yooj yim txav los ntawm capillaries
Ib daim ntawv cog lus tshuaj yog thaum ob lub atoms sib txawv muaj kev sib koom ua ke ntawm hluav taws xob ntawm valence electrons thiab nuclei. Nyob rau hauv dab tsi daim ntawv yuav pom feem ntau atoms nyob rau hauv cov xwm? Nyob rau hauv qhov xwm txheej feem ntau atoms pom nyob rau hauv cov tebchaw tuav nyob rau hauv qhov chaw los ntawm cov tshuaj bonds
Thawj ze li ntawm boron ntshiab yog tsim nyob rau hauv 1909 los ntawm American chemist Ezekiel Weintraub. Qhov twg boron tau txais nws lub npe? Lub npe boron los ntawm cov ntxhia borax uas tau txais nws lub npe los ntawm Arabic lo lus 'burah'. Boron muaj ob qhov ruaj khov thiab tshwm sim ib txwm muaj isotopes
Nyob rau hauv kwv yees li 5 billion xyoo, lub hnub yuav pib txheej txheem helium-hlwb, tig mus rau hauv lub hnub qub loj heev. Thaum nws nthuav dav, nws cov txheej txheej sab nrauv yuav haus Mercury thiab Venus, thiab ncav cuag lub ntiaj teb. Thaum cov hnub qub morph mus rau hauv cov neeg loj heev, lawv hloov qhov chaw nyob ntawm lawv lub cev
Yuav Ua Tau - Los ntawm Kev Sib Txuas. Qhov sib ntxiv ntawm qhov kev tshwm sim yog qhov tshwm sim ntawm qhov tshwm sim hauv qhov chaw piv txwv uas tsis nyob hauv qhov xwm txheej. Ib qho ntxiv yog nws tus kheej ib qho kev tshwm sim. Ib qho kev tshwm sim thiab nws cov khoom ntxiv yog kev sib koom ua ke thiab tag nrho
Jenifer Glynn Muam Roland Franklin Tij Laug Colin Franklin Tij Laug David Franklin Tij Laug
Kev hloov ntawm lub xeev yog kev hloov ntawm lub cev hauv qhov teeb meem. Lawv yog cov kev hloov pauv uas tsis hloov qhov teeb meem tshuaj pleev lossis tshuaj lom neeg. Cov txheej txheem koom nrog hauv kev hloov pauv hauv xeev suav nrog melting, khov, sublimation, deposition, condensation, thiab evaporation
Democritus, theorized tias atoms yog tshwj xeeb rau cov khoom uas lawv tsim. Tsis tas li ntawd, Democritus ntseeg tias cov atoms sib txawv ntawm qhov loj thiab cov duab, nyob rau hauv qhov kev txav mus tas li hauv qhov khoob, sib tsoo nrog ib leeg; thiab thaum muaj kev sib tsoo no, tuaj yeem rov qab los yog ua ke
Qhov loj npaum li cas yog qhov hnyav npaum li cas, qhov ntim qhia koj tias nws loj npaum li cas, thiab qhov ntom ntom yog loj faib los ntawm ntim
Diffraction yog pom ntawm lub teeb tsis muaj zog tab sis tsuas yog thaum nthwv dej ntsib teeb meem nrog cov wavelengths me me (xws li cov khoom raug tshem tawm hauv peb cov huab cua). Diffraction yog qhov khoov ntawm nthwv dej ncig obstacles thiab qhib. Tus nqi ntawm diffraction nce nrog nce wavelength
Potassium equilibrium muaj peev xwm EK yog − 84 mV nrog 5 mM poov tshuaj sab nraud thiab 140 mM sab hauv. Ntawm qhov tod tes, sodium equilibrium muaj peev xwm, ENa, yog kwv yees li +66 mV nrog kwv yees li 12 mM sodium sab hauv thiab 140 mM sab nraud
Lub hauv paus nitrogen tsuas yog ib qho nitrogen uas muaj cov molecule uas muaj cov tshuaj lom neeg zoo ib yam li lub hauv paus. Lawv yog cov tseem ceeb tshwj xeeb vim lawv tsim cov blocks ntawm DNA thiab RNA: adenine, guanine, cytosine, thymine thiab uracil
Muaj tsib hom speciation: allopatric, peripatric, parapatric, thiab sympatric thiab dag. Allopatric speciation (1) tshwm sim thaum ib hom sib cais ua ob pawg sib cais uas cais los ntawm ib leeg
Tshem tawm ib tsob ntoo xibtes yam tsis tua nws yuav tsum tau saib xyuas kev khawb thiab saib xyuas kom cov nroj tsuag noj qab nyob zoo. Tshem cov ntoo xibtes uas tseem hluas thiab tsis paub tab thaum lub caij nplooj ntoos hlav thiab lub caij ntuj sov ntxov. Dej lub pob hauv paus faus. Ntxig ib tug neeg kho tshuab spade rau hauv av kwv yees li 3 ko taw deb ntawm tsob ntoo lub cev
Av qeeg (tseem hu ua av qeeg, tshee tshee lossis temblor) yog kev co ntawm lub ntiaj teb uas tshwm sim los ntawm kev tso tawm sai sai ntawm lub zog hauv lub ntiaj teb lithosphere uas tsim seismic nthwv dej
Teb: Ib "tus ntaiv" ua haujlwm raws li kev tswj hwm thiab lub cuab yeej uas ntsuas qhov hnyav ntawm macromolecules zoo li DNA hauv gel electrophoresis. Tus ntaiv yog ib qho kev daws teeb meem uas muaj cov txheej txheem DNA uas tau hais kom zoo ntawm qhov ntev
Muaj nuj nqi. Tej zaum koj feem ntau paub txog cov cim sawv cev ntawm kev ua haujlwm, xws li kab zauv, y = f(x). Cov haujlwm tuaj yeem sawv cev los ntawm cov ntxhuav, cov cim, lossis cov duab
Universal Polymorphism. Cov cim uas yog universally polymorphic tuaj yeem xav tias muaj ntau yam sib txawv. Muaj ob hom universal polymorphism: parametric thiab subtyping
Txhawm rau tiv thaiv kev tawg ntawm limnic, cov kws tshawb fawb tau sim tshuaj xyuas cov pa roj carbon dioxide hauv cov pas dej uas muaj teeb meem, tab sis tsis muaj ntau yam uas koj tuaj yeem ua los tiv thaiv kev puas tsuaj loj. Txhawm rau kom yooj yim qhov cuam tshuam, tib neeg yuav tsum ceev faj yog tias lawv nyob hauv thaj chaw uas muaj kev phom sij
Kev poob siab metamorphism, tseem hu ua cuam tshuam metamorphism, tshwm sim thaum kub kub thiab kev kub ntxhov tshwm sim thaum muaj kev cuam tshuam deform lub hauv paus pob zeb txheej. Cov kev ntxhov siab uas tsim tawm thaum muaj kev cuam tshuam tuaj yeem ua rau muaj kev kub siab polymorphs ntawm ntau cov zaub mov hauv lub hom phiaj pob zeb
Geomorphology yog kev kawm txog cov av, lawv cov txheej txheem, daim ntawv thiab sediments ntawm lub ntiaj teb (thiab qee zaum ntawm lwm lub ntiaj teb). Txoj kev tshawb no suav nrog saib cov toj roob hauv pes kom ua haujlwm li cas lub ntiaj teb txheej txheem txheej txheem, xws li huab cua, dej thiab dej khov, tuaj yeem tsim cov toj roob hauv pes
slate Ua li no, marble puas yog qib qis metamorphic pob zeb? Qee qhov piv txwv ntawm non-foliated Cov pob zeb metamorphic yog marble , quartzite, thiab hornfels. Marble yog metamorphosed limestone. Thaum nws tsim, cov calcite crystals yuav loj hlob tuaj, thiab tej yam sedimentary textures thiab fossils uas muaj tam sim no raug puas tsuaj.
Cov tsiaj yug me nyuam, tsim lwm yam kab mob zoo li lawv tus kheej. Yuav kom rov tsim dua tshiab, lub cev yuav tsum tau ua ib daim qauv ntawm cov khoom no, uas tau dhau mus rau nws cov xeeb ntxwv. Qee cov kab mob ib leeg rov tsim dua los ntawm cov txheej txheem hu ua In binary fission, cov khoom ntawm ib lub xov tooj sib cais rau hauv ob lub hlwb
Sigma Notation. Σ Lub cim no (hu ua Sigma) txhais tau tias 'sum up'
OS maps siv cov ntawv luv ntawm MP rau Mile Post thiab MS rau Mile Stone. Kuv nrog Jan rau qhov no, OS Site qhia GP = Guide Post (kos npe ncej), p = twj tso kua mis (sanitary abbreviations 1:528 scale maps nyob rau hauv 1850s, W = zoo (cov npe qub siv thaum kawg 19th / start20 Centuries)
1 millimeter (mm) yog sib npaug rau 1000micrometers(µm). Txhawm rau hloov mm rau micrometers, muab cov mmvalue los ntawm 1000. Piv txwv li, txhawm rau nrhiav seb pes tsawg micrometersin ib hli thiab ib nrab, muab 1.5 los ntawm 1000, uas ua rau 1500micrometers hauv mm thiab ib nrab
ATP muaj ib pawg phosphate, ribose thiab adenine. Nws lub luag haujlwm hauv kev ua pa ntawm tes yog qhov tseem ceeb vim nws yog lub zog txiaj ntawm lub neej. Lub synthesis ntawm ATP absorbs zog vim ntau ATP yog tsim tom qab
Qhov thib ob theem ntawm photosynthesis muaj xws li carbonfixation thiab hu ua qhov tsaus ntuj tshuaj, los yog Calvin cycle.Photosynthesis pib nrog thawj theem, hu ua lightreactions. Ntawm no, lub zog yog lub hnub ci tau sau thiab hloov mus rau hauv tshuaj lom neeg lub zog hauv daim ntawv ntawm NADPH thiab ATP
Teb: Biotic: ntses, nroj tsuag, algae, kab mob. Abiotic: ntsev, dej, pob zeb, sediment, thoob khib nyiab
Lub caij nyoog yog tshwm sim los ntawm qhov qaij ntawm lub ntiaj teb txoj kev sib hloov axis deb los yog mus rau lub hnub thaum nws taug kev los ntawm nws txoj kev ntev xyoo nyob ib ncig ntawm lub hnub. Lub ntiaj teb muaj qhov qaij ntawm 23.5 degrees piv rau 'ecliptic dav hlau' (qhov kev xav ntawm qhov chaw tsim los ntawm nws yuav luag-cicular txoj kev ncig lub hnub)
Koj tuaj yeem paub txog phenol vim tias: Nws yog ib qho yooj yim insoluble hauv dej. Nws reacts withsodium hydroxide tov kom muab cov xim tsis muaj xim (thiab yog li yuav tsum yog acidic). Nws tsis tsim cov pa roj carbon dioxide nrog sodium carbonate lossis hydrogencarbonate kev daws teeb meem (thiab yog li yuav tsum tsis muaj zog acidic)
Cov zauv sib xyaw thiab cov zauv tsis zoo Muab cov zauv los ntawm tag nrho cov lej. Ntxiv cov khoom rau tus lej. Tus lej no yuav yog tus lej tshiab. Tus denominator ntawm qhov tsis tsim nyog feem yog tib yam li tus denominator nyob rau hauv thawj cov zauv sib xyaw
Purine: Lus Txhais Ib lub purine yog tsim los ntawm ib tug rau-tus tswv cuab nitrogen-muaj nplhaib thiab ib tug tsib-tus tswv cuab nitrogen-muaj nplhaib koom ua ke, zoo li ib tug hexagon thiab ib tug pentagon thawb ua ke. Purine hauv paus hauv DNA thiab RNA suav nrog adenine thiab guanine thiab yog li cov hauv paus paub zoo tshaj plaws ntawm qeb
Ntawm peb theem ntawm cov teeb meem (gas, kua, thiab khoom), suab nthwv dej mus rau qhov qeeb tshaj plaws ntawm cov pa roj, sai dua los ntawm cov kua, thiab cov khoom ceev tshaj plaws. Cia peb kawm seb yog vim li cas. Suab txav qeeb tshaj plaws ntawm cov pa roj. Qhov no yog vim hais tias cov molecules nyob rau hauv ib tug gasare spaced heev sib nrug
Gametes tsim nyob rau hauv multicellular haploid gametophyte (los ntawm Greek phyton, "cog"). Fertilization muab nce mus rau ib tug multicellular diploid sporophyte, uas tsim haploid spores ntawm meiosis. Kev faib tawm mitotic hauv gametophyte yuav tsum tsim cov gametes
Minoan kev vam meej Qhov tawg tawg ua rau qhov chaw nyob ze Minoan ntawm Akrotiri ntawm Santorini, uas tau muab tso rau hauv ib txheej ntawm pumice. Raws li cov Minoans yog lub hwj chim hauv hiav txwv thiab nyob ntawm cov nkoj rau lawv txoj kev ua neej, Thera tawg yuav ua rau muaj teeb meem loj nyiaj txiag rau Minoans
Vim yog lub orbital ntxiv, lub atomic radii nce, thiab cov electrons nyob deb ntawm lub nucleus. Yog li nws siv zog tsawg dua los cais cov hluav taws xob los ntawm nws cov nucleus. Lub orbital ntxiv muaj nws cov electron ceev nyob deb ntawm lub nucleus, thiab li no me ntsis poob rau hauv ionization zog
Cov phaj tectonic yog ntab saum lub pob zeb molten thiab txav mus thoob ntiaj teb. Xav tias nws zoo li dej khov ntab saum koj cov dej qab zib. Thaum lub continents thiab daim hlau txav nws hu ua continental drift. Xav txog lub pob zeb molten nyob rau hauv lub asthenosphere, tsis yog li pob zeb, tab sis raws li ib tug kua
Cov txheej txheem endothermic yog ib qho txheej txheem uas xav tau lossis nqus lub zog los ntawm nws qhov chaw nyob ib puag ncig, feem ntau yog ua kom sov. Nws yuav yog cov txheej txheem tshuaj, xws li dissolving ammonium nitrate hauv dej, lossis cov txheej txheem ntawm lub cev, xws li melting ntawm cov dej khov nab kuab