2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub isthmus tau xav tias tau tsim nyob ib puag ncig 2.8 lab xyoo dhau los, sib cais ntawm Atlantic thiab Pacific Dej hiav txwv thiab ua rau tsim lub Gulf Kwj. Qhov no tau pom thawj zaug hauv xyoo 1910 los ntawm North American paleontologist Henry Fairfield Osborn.
Leej twg nrhiav tau Isthmus ntawm Panama?
Nyob rau xyoo 1513, Spanish explorer Vasco Nunez de Balboa tau los ua thawj European pom tias Isthmus ntawm Panama tsuas yog thaj av me me uas sib cais cov dej hiav txwv Atlantic thiab Pacific. Balboa qhov kev tshawb pom tau ua rau muaj kev tshawb nrhiav rau txoj kev dej ntuj txuas rau ob lub hiav txwv.
Thaum twg Isthmus ntawm Panama nrhiav tau?
Cov teb chaws hloov pauv ntawm roob, hav zoov hav zoov hav zoov, thiab ntug hiav txwv. Lub isthmus tau tshawb pom thawj zaug los ntawm cov neeg yos hav zoov prehistoric-siv tsiv los ntawm North mus rau South America. Tus neeg tshawb nrhiav Spanish Rodrigo de Galván Bastidas yog thawj tus neeg European tuaj xyuas thaj chaw (1501).
Leej twg hla Panama Isthmus?
Lub xyoo pua 16th Spanish conquistador thiab explorer Vasco Núñez de Balboa (1475-1519) tau pab tsim thawj qhov chaw ruaj khov nyob rau South American sab av loj ntawm Darién, ntawm ntug dej hiav txwv ntawm Isthmus ntawm Panama. Xyoo 1513, thaum nws taug kev mus rau kev nrhiav kub, nws pom lub hiav txwv Pacific.
Vim li cas qhov kev tshawb pom ntawm Isthmus ntawm Panama tseem ceeb?
Kev tsim ntawm Isthmus ntawm Panama kuj ua si lub luag haujlwm tseem ceeb hauv biodiversity ntawm pebworld. Tus choj ua rau nws yooj yim dua rau cov tsiaj thiab cov nroj tsuag kom txav mus los ntawm cov teb chaws.
Pom zoo:
Leej twg yog tus ntsuj plig ntawm lub vestibule ntawm lub qhov rooj mus rau ntuj txiag teb tsaus?
Tus ntsuj plig twg nyob hauv lub Vestibule ntawm ntuj raug txim? Ntxhais hmoob mes kas tsis txawj sib hlub Raws li lawv yuav tsis ua raws li daim ntawv chij hauv lub neej, lawv yuav tsum tau caum tus chij rau hauv av npog nrog cov maggots thaum raug nplawm thiab hornets.
Leej twg pom tias lub orbit ntawm lub ntiaj teb yog ellipses?
Knowing then that the orbits of the planet are elliptical, johannes Kepler tsim peb txoj cai ntawm planetary motion laws of planetary motion Kepler's 2nd law prescribes the way the speed V of an object. orbiting ib qho chaw sib txawv nyob ib ncig ntawm nws lub orbit:
Lub caij nplooj ntoo hlav twg lub hnub qub pom pom nyob rau sab qaum teb hemisphere?
Leo pom saum ntuj hmo ntuj thaum caij nplooj ntoos hlav nyob rau sab qaum teb Hemisphere. Virgo pom nyob rau hmo ntuj thaum lub caij nplooj ntoos hlav nyob rau sab qaum teb Hemisphere. Scorpius pom nyob rau hmo ntuj thaum lub caij ntuj sov nyob rau sab qaum teb Hemisphere.
Leej twg lub siab los yog leej twg lub siab?
Ob leeg yog leej twg thiab leej twg los ntawm lub npe leej twg (shocking, txoj cai?). Leej twg yog tus contraction, txhais tau tias nws yog ob lo lus dai ua ke. … Leej twg yog ib tug muaj npe. Siv nws thaum koj nug (lossis qhia) rau leej twg ib yam dab tsi.
Lub sijhawm twg ntawm tus mob syphilis yog tus cwj pwm los ntawm qhov pom ntawm chancre?
Primary Stage Cov tsos mob ntawm ib leeg chancre qhia txog thawj (thawj) theem ntawm cov tsos mob syphilis, tab sis tej zaum yuav muaj ntau qhov mob. Lub chancre feem ntau yog (tab sis tsis tas li) khov kho, puag ncig, thiab tsis mob. Nws tshwm ntawm qhov chaw uas tus mob syphilis nkag mus rau hauv lub cev.
