2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Piranhas yog ib txwm nyob rau nruab nrab thiab sab qab teb dej nruab nrab ntawm South America, qhov chaw lawv nyob hauv cov dej kub thiab cov kwj deg thiab feem ntau pom hauv cov dej muv. Thaum muab khaws cia rau hauv teb chaws As Mes Lis Kas lawv tau pom nyob rau hauv pas dej, pas dej, dej, thiab qiv kwj.
piranha noj tau tib neeg sai npaum li cas?
Nws yuav tsum yog ib lub tsev kawm ntses loj heev - lossis ib tug nyuj me me. Raws li Ray Owczarzak, tus pab saib xyuas cov ntses ntawm National Aquarium hauv B altimore, nws yuav siv sijhawm 300 txog 500 piranhas tsib feeb txhawm rau tshem tawm nqaij tawm ntawm 180 phaus tib neeg.
Puas piranhas tua tib neeg?
Kev tawm tsam. Txawm hais tias feem ntau tau piav qhia tias muaj kev phom sij heev hauv xov xwm, piranhas feem ntau tsis sawv cev rau kev pheej hmoo loj rau tib neeg. … Feem ntau piranha tawm tsam tib neeg tsuas yog ua rau raug mob me, feem ntau ntawm ko taw lossis ob txhais tes, tab sis qee zaus lawv hnyav dua thiab tsis tshua muaj peev xwm ua rau tuag taus.
piranhas feem ntau nyob qhov twg?
Hnub no, piranhas nyob hauv dej qab zib ntawm South America los ntawm Orinoco River Basin hauv Venezuela mus txogtus dej Paraná hauv Argentina. Txawm hais tias kev kwv yees sib txawv, nyob ib ncig ntawm 30 hom nyob hauv cov pas dej thiab cov dej ntws ntawm South America niaj hnub no.
piranhas nyob qhov twg hauv dej hiav txwv?
Feem ntau, piranhas hauv cov tsiaj qus tsuas yog nyob hauv South America - qhov no yog lawv qhov chaw nyob. Lawv nyob hauv cov dej ntws thiab cov bass txuas nrog dej hiav txwv, tshwj xeeb Amazon, Guyane, Essequibo thiab lwm tus ntug dej hiav txwv.
Pom zoo:
Qhov khoom nyob rau pem hauv ntej ntawm lub lens diverging nyob qhov twg?
Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting.
Qhov chaw ncig tebchaws nyob hauv bhagalpur nyob qhov twg?
Bhagalpur faib lub zos yog ib pawg tswj hwm thaj chaw ntawm Bihar xeev ntawm Is Nrias teb, nrog Bhagalpur ua thawj coj hauv paus chaw haujlwm. Raws li xyoo 2005, qhov kev faib muaj xws li Bhagalpur koog tsev kawm ntawv, thiab Banka koog tsev kawm ntawv thiab nyob rau ntawm ntug dej ntawm Ganga River.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
