title: Biyo baraf ah oo ku yaalla dayaxa ayaa laga yaabaa inay jiraan bilyan sano
abstract: Waxaa jira baraf ku jira dayaxa. Cilmi baarisyo kala duwan ayaa muujiyay in tani ay tahay kiiska, saynisyahannaduna waxay sameynayaan wax kasta oo ay awoodaan si ay u ogaadaan sida dhabta ah inta baraf ah ee laga heli karo dusha dayaxa.