Dinosaurs ɗaya ne daga cikin nau'ikan jinsuna masu ban sha'awa a cikin tarihin juyin halitta a duniya. Dukkanmu mun saba da dinosaurs. Yaya dinosaur suke kama, menene dinosaur suke ci, yaya dinosaur suke farauta, wane irin yanayi ne dinosaur suka rayu, har ma dalilin da yasa dinosaur suka bace… Hatta mutane na yau da kullun na iya bayyana irin wannan tambayoyi game da dinosaur a fili da ma'ana. Mun riga mun san abubuwa da yawa game da dinosaur, amma akwai tambaya ɗaya da mutane da yawa ba za su fahimta ba ko ma tunani a kai: Yaya tsawon lokacin da dinosaur suka rayu?
Masana burbushin halittu sun taba yarda cewa dalilin da ya sa Dinosaur ya girma shine saboda sun rayu tsawon shekaru 100 zuwa 300. Haka kuma, kamar crocodiles, dinosaur sun kasance dabbobi masu girma marasa iyaka, suna girma a hankali kuma suna ci gaba da rayuwa a duk rayuwarsu. Amma yanzu mun san cewa ba haka lamarin yake ba. Yawancin dinosaur sun girma da sauri kuma sun mutu tun suna ƙuruciya.
· Yadda za a yi hukunci da tsawon rayuwar dinosaurs?
Gabaɗaya magana, manyan dinosaur sun rayu tsawon lokaci. An ƙaddara tsawon rayuwar dinosaur ta hanyar nazarin burbushin halittu. Ta hanyar yanke kasusuwan dinosaur burbushin halittu da kirga layin girma, masana kimiyya za su iya tantance shekarun dinosaur sannan su yi hasashen tsawon rayuwar dinosaur. Dukanmu mun san cewa shekarun itace ana iya saninsa ta hanyar duba zoben girma. Kamar bishiyoyi, kasusuwan dinosaur kuma suna samar da "zoben girma" kowace shekara. A kowace shekara bishiya tana girma, gangarta za ta yi girma a cikin da'ira, wanda ake kira zobe na shekara-shekara. Haka yake ga kasusuwan dinosaur. Masana kimiyya za su iya tantance shekarun dinosaur ta hanyar nazarin "zoben shekara-shekara" na burbushin kashin dinosaur.
Ta wannan hanyar, masana burbushin halittu sun kiyasta cewa tsawon rayuwar ɗan ƙaramin dinosaur Velociraptor ya kasance kusan shekaru 10 kawai; na Triceratops ya kasance kimanin shekaru 20; da kuma cewa mai mulkin Dinosaur, Tyrannosaurus rex, ya ɗauki shekaru 20 kafin ya girma kuma yawanci ya mutu tsakanin shekaru 27 zuwa 33. Carcharodontosaurus yana da tsawon rayuwa tsakanin shekaru 39 zuwa 53; Manyan dinosaurs masu tsayi masu tsayi, irin su Brontosaurus da Diplodocus, suna ɗaukar shekaru 30 zuwa 40 don isa girma, don haka zasu iya rayuwa kusan shekaru 70 zuwa 100.
Tsawon rayuwar dinosaur yana da alama ya sha bamban da tunaninmu. Ta yaya irin waɗannan dinosaur na ban mamaki za su sami irin wannan rayuwar yau da kullun? Wasu abokai na iya tambaya, wadanne abubuwa ne suka shafi rayuwar dinosaur? Me ya sa dinosaur suka rayu shekaru kaɗan kawai?
· Me ya sa dinosaur ba su daɗe ba?
Abu na farko da ke shafar rayuwar dinosaur shine metabolism. Gabaɗaya, endotherms tare da mafi girma metabolisms suna rayuwa gajarta rayuwa fiye da ectotherms tare da ƙananan metabolism. Ganin haka, abokai na iya cewa dinosaur dabbobi masu rarrafe ne, kuma dabbobi masu rarrafe ya kamata su zama dabbobi masu jin sanyi da tsawon rai. A gaskiya ma, masana kimiyya sun gano cewa yawancin dinosaur dabbobi ne masu dumin jini, don haka matakan da ke da yawa sun rage tsawon rayuwar dinosaur.
Abu na biyu, muhallin ya kuma yi tasiri mai muni ga rayuwar dinosaurs. A zamanin da dinosaur suka rayu, kodayake yanayin ya dace da dinosaur su rayu, har yanzu yana da tsauri idan aka kwatanta da duniya a yau: abun da ke cikin iskar oxygen a cikin yanayi, abun ciki na sulfur oxide a cikin yanayi da ruwa, da adadin radiation daga hasken rana. duniya duk sun bambanta da na yau. Irin wannan mugun yanayi, haɗe da muguwar farauta da gasa tsakanin Dinosaur, ya sa Dinosaurs da yawa suka mutu cikin ɗan gajeren lokaci.
Gabaɗaya, rayuwar dinosaur ba ta daɗe kamar yadda kowa ya yi tunani. Ta yaya irin wannan rayuwa ta yau da kullun ta ba da damar dinosaur su zama masu mulkin Mesozoic Era, suna mamaye duniya kusan shekaru miliyan 140? Wannan yana buƙatar ƙarin bincike daga masana burbushin halittu.
Kawah Dinosaur Official Website:www.kawahdinosaur.com
Lokacin aikawa: Nuwamba-23-2023