Cilmi-baaris Cusub oo Daah-furtay Sida Dadkii Hore ay uga Badbaadeen Isbeddellada Cimilada ee Ameerika
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Cilmi-baaris cilmiyeed dhawaan la sameeyay ayaa bixisay faahfaahin cusub oo ku saabsan nolosha dadkii ugu horreeyay ee soo degay Waqooyiga Ameerika. Iyagoo baranaya aagga White Sands ee hadda loo yaqaan dalka Maraykanka, khubaradu waxay ogaadeen sida dadkan qadiimiga ah ay ugu guulaysteen inay ku noolaadaan xilliyo ay jireen xaalado deegaan oo aad u cakiran.
Qiyaastii 23,200 oo sano ka hor, gobolku wuxuu la kulmay abaar gaaban laakiin aad u daran. Muddadan, heerka roobabku wuxuu hoos u dhacay si weyn, taas oo keentay in harada maxalliga ah ay noqoto mid aad u milix badan. Isbeddelkan ku yimid deegaanka ayaa ka dhigay mid ku adag xayawaanka iyo bini'aadamkaba inay helaan biyo nadiif ah iyo cunto.
In kasta oo ay jireen xaaladahan adag, caddaymuhu waxay soo jeedinayaan in dadkii hore ay ku sugnaayeen aagga oo ay la qabsadeen muuqaalka isbeddelaya. Saynisyahannadu waxay aaminsan yihiin in barashada dhacdooyinkan taariikhiga ah ay naga caawinayso inaan fahamno sida dadku ay taariikh ahaan uga jawaabeen cadaadiska cimilada iyo yaraanta kheyraadka.
Cilmi-baaristan ayaa muhiim ah sababtoo ah waxay beddeshay fahamkeenna ku saabsan goorta iyo sida dadku ugu horreeyeen inay degaan qaaradaha Ameerika. Iyagoo falanqaynaya taariikhda cimilada ee goobta White Sands, khubaradu waxay helayaan sawir cad oo ku saabsan caqabadaha ay la kulmeen dadkii ugu horreeyay ee degay qaaradda.
Iyadoo cilmi-baarayaashu ay sii wadaan baaritaanka goobta, waxay rajaynayaan inay wax badan ka ogaadaan xeeladaha badbaadada ee ay isticmaali jireen kooxahan hore. Daraasaddan ayaa iftiiminaysa adkaysiga bini'aadamka marka ay la kulmaan isbeddello degdeg ah oo daran oo ku yimaada deegaankooda dabiiciga ah.
Sources: Phys.org
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