Nazorat savollari

Nazorat savollari

1. 
   Katta va kichik doira qismlarini sanab bering.
   
2. 
   Qon aylanish evolyutsiyasini tushuntiring.
   
3. 
   Poykiloterm nima?
   
4. 
   Qon haydalishini tushuntiring.