Geedi socodka: Qaboojinta ayaa sidoo kale keentay isbeddelada xilliyeed. Geedaha caleenta leh, oo si fiican ula qabsan kara isbeddelada heerkulka ee waaweyn, waxay bilaabeen inay ka hortagaan noocyada kulaylaha ee cagaarka ah. Dhamaadka muddada, kaymaha caleenta leh waxay dabooleen qaybo badan oo ka mid ah qaaradaha waqooyiga, oo ay ku jiraan Waqooyiga Ameerika, Eurasia iyo Arctic, iyo kaymaha roobka ee lagu hayo kaliya Equatorial South America, Africa, India iyo Australia. Su'aal: Nooca geedka ayaa si fiican ula qabsan kara isbeddelada heerkulka ee waaweyn?
Geedaha caleenta iska daadanaya