Kubyerekeranye nimpamvu zo kuzimangana kwa dinosaurs, biracyigwa.Kumwanya muremure, kureba cyane, no kuzimangana kwa dinosaurs mumyaka 6500 ishize hafi ya meteorite nini.Nk’uko ubushakashatsi bubyerekana, hari kilometero 7-10 z'umurambararo wa asteroide uzagwa ku isi, bigatera igisasu kinini, nko guta umukungugu mwinshi mu kirere kugira ngo inzu ya Zhetianbiri y’umucanga n’igihu, biganisha kuri guhagarika amafoto yibihingwa, Kandi rero kuzimangana kwa dinosaurs.Icyerekezo cyingaruka za asteroide cyahise gishyigikirwa nabahanga benshi.Mu 1991, muri Mexico ya Yucatan Peninsula yabayeho mu kuvumbura igihe kirekire cy’ingaruka za meteorite, ukuri ni ikindi kimenyetso cyerekana iki gitekerezo.Uyu munsi, iki gitekerezo gisa nkicyahindutse umwanzuro.
Ariko hariho n'abantu benshi kubwingaruka za asteroide kubashidikanya, kuko ikigaragara ni: ibikeri, ingona nizindi nyinshi zumva cyane ubushyuhe bwinyamaswa zarwanyije kandi zirokoka Cretaceous.Iyi nyigisho ntishobora gusobanura impamvu dinosaurs yapfuye gusa.Kugeza ubu, abahanga bashyize ahagaragara icyateye kuzimangana kwa dinozeurs ntikiri munsi ya cumi, ibintu byinshi ku buryo butangaje kandi bushimishije, "ibi bikaba byavuzwe na meteorite," ariko ni kimwe muri byo. Usibye na "kugongana na meteorite", kuzimangana kwa dinosaur ku ngingo nyamukuru hari ibi bikurikira: Icya mbere, imihindagurikire y’ikirere, yagize.Mu myaka miriyoni 6500 ishize, ikirere cyisi cyahindutse gitunguranye mubushyuhe bwaragabanutse, bituma umwuka wa ogisijeni ugabanuka mukirere kugirango dinosaurs idashobora kubaho. Byasabwe kandi ko dinosaurs iba ifite amaraso akonje, ariko idafite umusatsi cyangwa urugingo rushyushye kandi irashobora kutamenyera ubushyuhe bwisi bwaragabanutse, byarakonje kugeza gupfa.
Icya kabiri, amoko, yavuze urugamba.Iherezo ryigihe cya dinosaur, ryagaragaye bwa mbere mu nyamaswa z’inyamabere nto, izi nyamaswa ni inyamaswa zangiza zishobora kugaburira amagi. Kubera iyo mpamvu yo kubura inyamaswa zangiza inyamaswa, byinshi kandi amaherezo bikarya amagi.
Icya gatatu, gutembera kumugabane, byavuzwe.Ubushakashatsi bwa Jewolojiya bugaragaza ko kubaho kwa dinozawusi ku myaka y’isi yonyine igice cy’umugabane wa Afurika gusa, ni ukuvuga "Pangea."Bitewe n’imihindagurikire y’ubutaka bw’isi, umugabane wabereye muri Jurasike yo kugabana kwinshi no gutembera, biganisha ku bidukikije n’imihindagurikire y’ikirere, bityo dinozawusi irazimangana.
Icya kane, impinduka muri geomagnetic yavuze.Ibinyabuzima bigezweho byerekana ko ibice bimwe na bimwe bya biologiya na magnetique bifitanye isano nurupfu. Byinshi byunvikana kumurima wa magneti wa biologiya, mumihindagurikire yumurima wa rukuruzi wisi, bishobora gutuma uzimangana.Birasa rero ko kuzimangana kwa dinosaur bishobora kuba bifitanye isano nimpinduka muri isi ya rukuruzi.V. yavuze uburozi bwa angiosperm.Iherezo rya dinosaur, Imikino ngororamubiri yisi irazimira buhoro buhoro, isimburwa numubare munini wa angiosperms, gymnosperms irimo ibyo bimera ntabwo bimeze muburyo bwuburozi bwibiryo binini bidasanzwe bya dinosaur, gufata umubare munini wa angiosperms byatumye habaho uburozi muri umubiri Byinshi, amaherezo uburozi.Six, yavuze imvura ya aside.Igihe cyanyuma cya Cretaceous gishobora kuba cyari munsi yimvura ya acide, ubutaka, harimo no muri tronc troncium, gushonga dinosaur binyuze mumazi yo kunywa no kurya, muburyo butaziguye cyangwa butaziguye, gufata strontium, uburozi bukabije cyangwa budakira, amatsinda yanyuma yabapfuye.
Impamvu zo kuzimira dinosaurs kuri hypothesis ko ibyavuzwe haruguru birenze kure ibi.Ariko iyi hypothesis yavuzwe haruguru mumuryango wubumenyi ifite abayishyigikiye benshi.Byukuri, buri kimwe cyavuzwe haruguru, hari ahantu hadatunganye.Kurugero, "imihindagurikire y’ikirere" ntisobanura neza impamvu z’imihindagurikire y’ikirere.Nyuma yo kugenzura, dinosaur ntoya muri Coelurosauria, hamwe hakiri kare bihagije kurwanya inyamaswa z’inyamabere, bityo "amoko arwana no kuvuga" hari icyuho.Muri geologiya ya none, "umugabane wa drift theory" ubwayo iracyari hypothesis. "Uburozi bwa Angiosperms" n "" imvura ya aside "kimwe no kubura ibimenyetso bihagije.Nkigisubizo, impamvu nyayo yo kuzimangana kwa dinozawusi, ntiruracukumbura neza.
Kawah Dinosaur Urubuga rwemewe:www.kawahdinosaur.com