Dangane da dalilan da suka haifar da bacewar Dinosaur, har yanzu ana ci gaba da nazarinsa.Na dogon lokaci, ra'ayi mafi iko, da kuma ƙarewar dinosaur shekaru 6500 da suka wuce game da babban meteorite.A cewar binciken, akwai wani asteroid diamita mai tsawon kilomita 7-10 zai fado a saman doron kasa, wanda ya haifar da wani babban fashewa, kamar jefa ƙura mai yawa a cikin sararin samaniya, har ya zama gidan yashi da Fog na Zhetianbiri, wanda ya kai ga dakatar da photosynthesis na shuka, sabili da haka bacewar dinosaur. Ka'idar tasiri na Asteroid da sauri ta sami goyon bayan masana kimiyya da yawa.A cikin 1991, a cikin Yucatan Peninsula na Mexico ya faru a cikin gano dogon lokaci na tasirin tasirin meteorite, gaskiyar ita ce ƙarin shaidar wannan ra'ayi.A yau, wannan ra'ayi kamar ya zama ƙarshe.
Amma akwai kuma mutane da yawa don irin wannan tasirin asteroid a kan masu shakka, saboda gaskiyar ita ce: kwadi, crocodiles da wasu da yawa masu kula da zafin jiki na dabbobi sun yi tsayayya da tsira daga Cretaceous.Wannan ka'idar ba zai iya bayyana dalilin da yasa kawai dinosaur suka mutu ba.Har zuwa yau, masana kimiyya sun sanya gaba ga dalilin da bacewar dinosaurs sun kasance ba kasa da dozin al'amura, mafi arziki ga ban mamaki da ban sha'awa, "in ji meteorite karo," amma yana daya daga cikinsu. Baya ga " karo na meteorite ", bacewar dinosaur a babban ra'ayi akwai masu zuwa: Na farko, sauyin yanayi, in ji.Shekaru miliyan 6500 da suka wuce, yanayin duniya ba zato ba tsammani ya canza yanayin yanayin zafi, wanda ya haifar da raguwar iskar oxygen a cikin sararin samaniya ta yadda dinosaur ba zai iya rayuwa ba. An kuma nuna cewa dinosaur suna da jinin sanyi, amma ba su da gashi ko gabobin dumi kuma suna iya. ba daidaita da yanayin zafin duniya ya ragu, an daskare su har mutuwa.
Na biyu, nau'in, ya ce yakin.Ƙarshen zamanin Dinosaur, ya fara bayyana a cikin ƙananan dabbobi masu shayarwa, waɗannan dabbobin dabbobin dabbar beraye na iya ciyar da ƙwai.
Na uku, drift na nahiyar, in ji.Binciken Geology ya nuna cewa rayuwar dinosaur a lokacin da duniya ke da wani yanki na babban yankin kawai, wato, "Pangea."Saboda canje-canje a cikin ɓawon ƙasa, nahiyar ta faru a cikin Jurassic na babban rabo da drift, wanda ya haifar da yanayi da sauyin yanayi, sabili da haka bacewar dinosaur.
Na hudu, canje-canje a cikin geomagnetic ya ce.Ilimin halitta na zamani ya nuna cewa wasu filayen nazarin halittu da na maganadisu da ke da alaƙa da mutuwa.Mafi kulawa ga filin maganadisu na ilmin halitta, a cikin yanayin yanayin maganadisu na duniya, na iya haifar da lalacewa. filin maganadisu na Duniya.V. ya ce angiosperm guba.Ƙarshen zamanin dinosaur, gymnosperms na duniya a hankali ya ɓace, maye gurbin su da adadi mai yawa na angiosperms, gymnosperms sun ƙunshi waɗannan tsire-tsire ba su cikin siffar mai guba na babban abincin dinosaur, cin abinci mai yawa na angiosperms ya haifar da tara gubobi a cikin jiki yayi yawa, a karshe guba. Shida, in ji ruwan acid.Marigayi lokacin Cretaceous na iya kasancewa ƙarƙashin ruwan sama mai ƙarfi na acid, ƙasa, gami da a cikin abubuwan gano strontium, za a narkar da dinosaur ta hanyar ruwan sha da abinci, kai tsaye ko a kaikaice, cin abinci na strontium, m ko guba na yau da kullun, ƙungiyoyin ƙarshe na matattu.
Dalilan bacewar Dinosaur a kan hasashen da na sama ya ambata fiye da waɗannan.Amma waɗannan hasashe da aka ambata a sama a cikin al'ummar kimiyya suna da ƙarin magoya baya. Tabbas, kowane ɗayan abubuwan da ke sama, akwai wuri mara kyau.Misali, “canjin yanayi” baya fayyace musabbabin sauyin yanayi.Bayan dubawa, wasu ƙananan dinosaur a cikin Coelurosauria, tare da isasshen wuri a kan kananan dabbobi masu shayarwa, don haka "nau'i-nau'i suna gwagwarmaya don faɗi" akwai madauki.A cikin ilimin geology na zamani, "ka'idar drift ta nahiyar" ita kanta har yanzu hasashe ce." Guba na Angiosperms" da "ruwan acid" iri ɗaya rashin isasshen shaida.Sakamakon haka, ainihin musabbabin bacewar Dinosaur, har yanzu ba a kara gano shi ba.
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