Avian respiratory system

ىخرج

سؤال 1 of 1

  الوقت المتبقي


0
215890
0
120
block

There is a countercurrent flow through the capillaries to maintain the concentration gradient.

حدد الإجابات الصحيحة  

(0/0)








215892
0
120
none
215894
0
120
none
215898
0
120
none
215904
0
120
none
215906
0
120
none