waagii baahiyosooik
Magac labJooloji
Waagii hore ee nolosha, waa kan ugu horreeya saddex qaybood ee waaweyn ee taxanaha waqtiga jiyoolojiyeed (ee ka dambeyay kambiriyan-ka-horreeyaha). Kolkaas oo muddooyinka taariikhda dunida ka mid ah kana horreeyay waagii mesosooigga wuxuu kalabaxsanyahay laga billabo 600 oo milyan ilaa 200 oo milyan oo tagtay.
Wadarta Magacan
waayahii ..., m.l