Answer:
The respiratory system and the circulatory system work closely together to deliver oxygen to cells to get rid of the carbon dioxide the cells produce. The circulatory system picks up oxygen in the lungs and drops it off in the tissues, then performs the reverse service for carbon dioxide!
Explanation:
In brief, a crossmatch involves placing recipient serum (potentially containing donor-specific anti-HLA antibodies) onto donor lymphocytes (containing HLA antigens).
Answer:
speed = distance/ time= 45/3 = 15miles per hour
Explanation:
C
because time is still going by when the car isn’t moving