2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Gibber, pob zeb- thiab pebble-littered cheeb tsam ntawm arid lossis semi-arid lub teb chaws hauv Australia. … Lub npog pob zeb tsuas yog ib qho pob zeb sib sib zog nqus, los yog nws yuav muaj ob peb txheej faus rau hauv cov khoom zoo uas tau xav tias tau tawg rau hauv.
Dab tsi yog suab puam gibber?
Cov ntsiab lus 'stony downs' lossis 'gibber plains' yog siv los piav qhia desert pavement hauv Australia. … Nws yog ib thaj av suab puam uas muaj cov ntim zoo sib xws, sib cuam tshuam angular lossis rounded pob zeb tawg ntawm pebble thiab cobble loj.
gibber plains ua li cas?
Nyob rau lwm lub teb chaws muaj ntau lub npe sib txawv rau hom kev tsim no. Tus gibber yog tshuav dab tsi thaum cov xuab zeb thiab hmoov av tau tawg los ntawm cov suab puam cua. Tshuab xuab zeb polishes thiab smooths lub pob zeb thiab gravel. Lub pob zeb zoo li lub tshuab cua tshuab hu ua lub qhov cua.
Dab tsi yog reg hauv Africa?
Regs yog tiaj tiaj ntawm cov xuab zeb thiab pob zeb uas ua rau 70 feem pua ntawm Sahara. Cov pob zeb tuaj yeem yog xim dub, liab, lossis dawb. Regs yog qhov seem ntawm prehistoric seabeds thiab dej txaj, tab sis tam sim no ze li ntawm waterless. Hamadas yog elevated toj siab ntawm pob zeb thiab pob zeb uas ncav cuag qhov siab ntawm 3, 353 meters (11, 000 ko taw).
Yardang yog dab tsi?
Yardangs yog tsim los ntawm cua yaig, feem ntau ntawm ib qho chaw tiaj tus uas tsim los ntawm thaj chaw ntawm cov khoom siv tawv thiab softer. Cov khoom muag muag yog eroded thiab tshem tawm los ntawm cua, thiab cov khoom siv tawvtseem nyob.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Dab tsi yog qhov txawv ntawm kev pom thiab pom?
Kev nkag siab yog qhov koj txhais. Nws yog koj txoj kev nkag siab txog qhov xwm txheej, tus neeg, lossis khoom. Nws yog lub ntsiab lus koj muab rau txhua qhov kev txhawb nqa. Txoj kev xav yog koj qhov kev xav. Koj siv lo lus pom zoo li cas?
Adenoids nyob qhov twg thiab lawv ua dab tsi?
Dab tsi yog adenoids? Adenoids yog caj pas nyob saum lub ru tsev ntawm lub qhov ncauj, tom qab lub qhov ntswg. Lawv zoo li cov pob me me ntawm cov ntaub so ntswg, thiab ua lub hom phiaj tseem ceeb hauv cov menyuam yaus. Adenoids yog ib feem ntawm lub cev tiv thaiv kab mob thiab pab tiv thaiv lub cev ntawm cov kab mob thiab kab mob.
Leej twg yog cov koom nrog hauv tsev hais plaub tsis muaj kev tshaj lij thiab lawv lub luag haujlwm yog dab tsi?
Cov tsis muaj haujlwm, paub tias yog neeg sab nrauv, suav nrog jurors, saib, xovxwm, nteg tim khawv, thiab cov neeg txaus siab xws li cov neeg foob thiab cov neeg raug tsim txom. Pawg neeg ua haujlwm hauv tsev hais plaub muaj xws li tus kws lij choj, tus kws lij choj, tus kws lij choj, tus kws lij choj, tus kws tshaj xov xwm, tus neeg ua haujlwm hauv tsev hais plaub, thiab tus kws txiav txim plaub ntug.
Dab tsi yog heterocysts qhov twg lawv pom?
Ib lub xovtooj tshwj xeeb pom hauv nitrogen-fixing cyanobacteria . Heterocysts yog cov hlwb loj nrog cov phab ntsa tuab thiab lawv tsis muaj chlorophyll, ua rau lawv tsis muaj xim. Lawv yog qhov chaw ntawm nitrogen fixation, uas lawv tsim cov enzyme nitrogenase nitrogenase MoFe protein yog ib tug heterotetramer uas muaj ob α subunits thiab ob β subunits, nrog ib tug loj ntawm kwv yees li 240-250kDa.
