2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub vaj dub ntsaum (Lasius niger), tseem hu ua cov ntsaum dub, yog ib hom tsiaj ntawm cov subgenus Lasius, uas pom thoob plaws Tebchaws Europe thiab hauv qee qhov chaw ntawm North America, South America, Asia thiab Australia.
Yuav ua li cas yog lub vaj dub ntsaum?
Dub vaj ntsaum muaj feem ntau pom hauv vaj hauv qab cib thiab paj lauj kaub. Qhov chaw uas pom lawv nyob hauv nroog loj tshaj plaws yog nyob nruab nrab ntawm txoj kev pavements thiab curbs.
Is lasius Niger invasive?
Lasius neglectus kuj tsim cov cheeb tsam polygynous nrog muaj ntau tus poj huab tais ua haujlwm hauv lub zes [24]. Hom kab mob no muaj ecological cuam tshuam ntawm biodiversity ntawm Formicidae thiab lwm yam invertebrates (piv txwv li, txo qhov spatial thiab temporal foraging ntawm haiv neeg ntsaum; [25, 26]).
Nkauj ntsaum dub nyob qhov twg?
Nyob hauv Tebchaws Meskas, cov ntsaum vwm muaj neeg coob coob los ntawm Florida mus rau South Carolina thiab sab hnub poob mus rau Texas. Nws feem ntau pom muaj nyob hauv cov tsev nyob thiab cov tsev khaws khoom ntau dua ntawm Tebchaws Meskas sab hnub tuaj (Creighton 1950) thiab hauv California thiab Arizona (Trager 1984).
kab lasius Niger noj dab tsi?
Lasius niger yooj yim rau noj vim lawv noj ntau yam khoom noj, suav nrog ntau hom kab, suav nrog flies, kab civliv, kab, kab arthropods xws li woodlice. Cov ntsaum kuj yuav noj cov larvae ntawm ntau kab.
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.
