2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Feem ntau ntawm cov leeches nyob hauv thaj chaw dej ntshiab, hos qee hom tuaj yeem pom hauv thaj av av lossis hauv hiav txwv.
Hirudinea pom qhov twg?
Habitat: Cov leech no pom nyob rau hauv ib txwm muaj tshwm sim hauv pas dej tshiab, pas dej, kwj deg, thiab marshes. Nws feem ntau pom muaj nyob rau ntawm ntug dej ze ntawm ntug dej thaum so. Kev Noj Qab Haus Huv: Cov tshuaj kho mob hauv North America feem ntau pub rau amphibian thiab cov ntshav ntses, tab sis qee zaus tawm tsam cov tsiaj nyeg.
leeches nquag pom nyob qhov twg?
Leeches feem ntau pom muaj nyob hauv qhov chaw ntiav ntawm cov pas dej ntawm cov nroj tsuag, hauv qab pob zeb, sticks, cav, thiab txuas rau nplooj lwj.
leeches nyob qhov twg?
Ntau leeches yog freshwater tsiaj, tab sis muaj ntau hom av thiab marine. Av leeches muaj ntau nyob rau hauv av los yog nyob rau hauv tsawg foliage nyob rau hauv ntub nag hav zoov. Nyob rau hauv qhuav hav zoov lawv yuav pom nyob rau hauv av nyob rau hauv seepage moistened qhov chaw. Feem ntau tsis nkag mus rau hauv dej thiab ua luam dej tsis tau, tab sis tuaj yeem muaj sia nyob rau lub sijhawm immersion.
Cov piv txwv ntawm Hirudinea yog dab tsi?
chav Hirudinea hauv phylum Annelida (segmented worms) muaj the leeches, qhov tshwj xeeb tshaj plaws ntawm pawg loj annelid. Leeches feem ntau yog dorsoventrally flattened annelids nrog suckers ntawm ob kawg thiab 34 lub cev ntu (tsim I-XXXIV) uas yog sab nraud muab faib ua ib tug xov tooj ntawm annuli.
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.
