Maxaa loosku daboolayaa si loo abuuro dhul beereed wanaagsan? Marka la eego su'aasha hore, ku qor macnaha guud ee jawaabta. Waxay noqon kartaa 1 ilaa 20 jumladood. Macnaha guud:
Inta badan Rhine ee hadda socodka ah kuma hoos jirin barafka xilligii barafka ee ugu dambeeyay; in kasta oo, ilaheeda weli ay tahay inay ahayd baraf. Dunida tundra, oo ay ku noolyihiin xayawaanada iyo dhirta xilliga barafka, waxay ku fidsan yihiin bartamaha Yurub, Aasiya ilaa Badweynta Atlantic. Tani waxay dhacday xilligii barafka ugu dambeeyay, ca. 22,000<unk>14,000 sano ka hor, markii ay barafku dabooleen Scandinavia, Baltics, Scotland iyo Alps, laakiin ay ka tageen booska u dhexeeya sida tundra furan. Waxyaabaha ay dabayshu ka qaaday ee ka sameysmay dhulka tundra, waxay ku degeen gudaha iyo hareeraha dooxada Rhine, iyagoo gacan ka geystay faa'iidada beeraha ee hadda jirta.