2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Whooper swans muaj ntau yam thiab pom nyob rau hauv thaj chaw boreal hauv Eurasia thiab ntawm ntau cov Islands tuaj ze. Lawv tsiv teb tsaws ntau pua lossis ntau txhiab mais mus rau qhov chaw caij ntuj no nyob rau sab hnub tuaj Asia thiab sab qab teb Europe. Muaj qee zaus vagants nyob rau sab hnub poob North America thiab Indian subcontinent.
Vim li cas ho hu ua swans?
Nws yog Eurasian tus khub ntawmNorth American trumpeter swan, thiab hom hom rau genus Cygnus. Francis Willughby thiab John Ray's Ornithology ntawm 1676 hu ua "tus Elk, Hooper, lossis qus Swan". Lub npe scientific yog los ntawm cygnus, Latin rau "swan".
Puas yog swans tsawg?
Tus swan whooper yog ib tug noog tsis tshua muaj nyob hauv UK, tab sis muaj coob tus neeg loj dua uas siv lub caij ntuj no ntawm no tom qab taug kev ntev los ntawm Iceland. Nws muaj xim daj ntau dua ntawm nws daim nqi daj-thiab-dub dua li Bewick's Swan.
Swan ya tau siab npaum li cas?
Txhua tus swans tuaj yeem ya nrog qee hom mus txog qhov siab ntawm 6,000 txog 8,000 feet, nruab nrab nrawm ntawm 20 txog 30 mais toj ib teev thiab taug kev ntau txhiab mais txhua xyoo.
swan nyob ntev npaum li cas?
swan ib txwm nyob ntev npaum li cas? Nyob rau hauv cov qus, nrog rau tag nrho cov kev phom sij lawv yuav tsum tau nyob nrog (vandals, pa phem, dev, mink, overhead cables, txuas hniav, pylons, lead lom, nuv ntses-tackle raug mob thiab lwm yam), qhov nruab nrab lifespan yuav yog 12xyoo. Hauv ib puag ncig tiv thaiv daim duab no tuaj yeem ncav cuag 30 xyoo.
Pom zoo:
Tus dej toccoa nyob rau hauv georgia nyob qhov twg?
Tus Dej Toccoa yog ib qho ntawm North Georgia tus dej txias tshaj plaws. Nws pib nce siab hauv roob ntawm Union County thiab ntws mus rau sab hnub poob rau hauv Blue Ridge Lake tig mus rau sab qaum teb mus rau McCaysville thiab mus rau Tennessee.
Tus tub xa ntawv nyob rau hauv dalaran nyob qhov twg?
Qhov chaw xa ntawv pom qab khw muag khoom hauv Dalaran. Koj nyem rau ntawm cov yeeb nkab mus rau hauv av. Lub chaw xa ntawv nyob qhov twg? Lub Chaw Ua Haujlwm Tus Thawj Kav Tebchaws yog qhov chaw nyob hauv Dalaran, uas nkag mus tau los ntawm Xa Ntawv Tube.
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.
