Ngokubhekiselele kwizizathu zokuphela kweedinosaurs, kusafundwa. Ixesha elide, imbono enegunya kakhulu, kunye nokuphela kweedinosaurs kwiminyaka eyi-6500 edlulileyo malunga ne-meteorite enkulu. Ngokutsho kuphononongo, kwakukho 7-10 km ububanzi asteroid uya kuwa phezu komhlaba, ebangela ugqabhuko-dubulo olukhulu, ezifana nokuphosa uthuli oluninzi emoyeni ukuze enze Zhetianbiri House of Sand kunye nenkungu, kwakhokelela ekumisweni photosynthesis yezityalo , Kwaye ke ngoko ukuphela kweedinosaurs.Impembelelo ye-Asteroid ithiyori ifumene ngokukhawuleza inkxaso yempembelelo ye-asteroid. Ngo-1991, kwi-Yucatan Peninsula yaseMexico kwenzeka ekufumaneni ixesha elide leempembelelo ze-meteorite craters, inyani bubungqina obungakumbi bolu luvo. Namhlanje, le mbono ibonakala isisigqibo.
Kodwa kukho kwakhona abantu abaninzi impembelelo asteroid enjalo kwi amathandabuzo, kuba inyaniso kukuba: amasele, iingwenya kunye nezinye ezininzi kakhulu uvakalelo kubushushu bezilwanyana baye baxhathisa kwaye basinda Cretaceous. Le ngcamango ayikwazi ukuchaza ukuba kutheni iidinosaur kuphela zafa. Ukuza kuthi ga ngoku, izazinzulu ziye zabeka phambili ngesizathu sokuphela kweedayinaso ziye zaba akukho ngaphantsi kweshumi elinesibini iimeko, ubutyebi obungakumbi ukuya kumdlalo omangalisayo kunye nemincili, "utshilo ukungqubana kweemeteorite," kodwa ngomnye wabo.Ukongezelela "kungquzulwano lwemeteorite", ukupheliswa kweedinosaurs kwindawo ephambili yokujonga kukho utshintsho lwemozulu, okokuqala: Kwiminyaka eyi-6500 yezigidi eyadlulayo, imozulu yoMhlaba itshintsha ngesiquphe kwiqondo lobushushu lehla, nto leyo ebangela ukuncipha kweoksijini kwiatmosfera ukuze iidinosaurs zingakwazi ukusinda.Kwacetyiswa ukuba iidinosaurs zinegazi elibandayo, kodwa ngaphandle kweenwele okanye ilungu elifudumeleyo kwaye akakwazi ukuziqhelanisa nobushushu boMhlaba wehla, zaye zikhenkceke zife.
Okwesibini, uhlobo, wathi ukulwa. Ukuphela kwexesha le-dinosaur, okokuqala kubonakala kwizilwanyana ezincinci ezincancisayo, ezi zilwanyana zizilwanyana ezizizilwanyana ezinokutya amaqanda.Ngenxa yokunqongophala kwezilwanyana ezincinci, ngakumbi kwaye ekugqibeleni zidle amaqanda.
Okwesithathu, i-continental drift, yathi. Uphando lweGeology lubonisa ukuba ukusinda kweedayinaso kwiminyaka yobudala boMhlaba kuphela sisiqwenga selizwe, oko kukuthi, "iPangea." Ngenxa yotshintsho kuqweqwe lomhlaba, ilizwekazi lenzeka kwiJurassic yolwahlulo olukhulu kunye nokukhukuliseka, okukhokelela kokusingqongileyo kunye nokutshintsha kwemozulu, kwaye ngenxa yoko ukuphela kweedinosaurs.
Okwesine, utshintsho kwi-geomagnetic uthe. Ibhayoloji yanamhlanje ibonisa ukuba imimandla ethile yebhayoloji kunye nemagnethi enxulumene nokufa.Uvakalelo olungakumbi kwimagnethi yebhayoloji, kutshintsho lwemagnethi yomhlaba, kunokukhokelela ekuphelisweni.Kubonakala ke ngoko ukuba ukuphela kweedayinaso kunxulumene nokutshintsha kwemagnethi yomhlaba. V. uthe angiosperm poisoning. Ukuphela kwexesha dinosaur, gymnosperms Umhlaba ngokuthe ngcembe shwaka, endaweni yayo inani elikhulu angiosperms, gymnosperms ziqulathe ezi zityalo azikho imilo eyityhefu ukutya enkulu dinosaur engaqhelekanga, ukuthathwa inani elikhulu ofangiosperms kwakhokelela ekuqokeleleni ityhefu emzimbeni Kakhulu, ekugqibeleni imvula.Six, wathi acid. Ixesha le-Cretaceous lasekupheleni linokuba phantsi kwemvula enamandla ye-asidi, umhlaba, kubandakanywa kwi-trace element strontium, i-dinosaur echithwe ngamanzi okusela kunye nokutya, ngokuthe ngqo okanye ngokungathanga ngqo, i-strontium intake, ityhefu eyingozi okanye engapheliyo, amaqela okugqibela abafileyo.
Izizathu zokuphela kweedayinaso kwingcinga yokuba ezi zikhankanywe ngasentla zingaphezulu kakhulu kwezi. Kodwa le ngcamango ikhankanywe ngasentla kwinzululwazi inabaxhasi abaninzi.Kambe ke, nganye kwezi zingasentla, kukho indawo engafezekanga. Umzekelo, "utshintsho lwemozulu" alucacisi oonobangela bokutshintsha kwemozulu. Emva kokuhlolwa, ezinye iidayinaso ezincinci kwiCoelurosauria, zinexesha elaneleyo lokulwa nezilwanyana ezincancisayo, ngoko ke "iintlobo ziyasokola ukutsho" kukho imingxuma. Kwi-geology yanamhlanje, "ithiyori ye-continental drift" ngokwayo iseyi-hypothesis."I-Angiosperms poisoning" kunye "nemvula yeasidi" ukunqongophala kobungqina obaneleyo. Ngenxa yoko, oyena nobangela wokuphela kweedayinaso, kusafuneka uphonononge ngakumbi.
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