Answer:
Rh+ blood can be given only once to a non-sensitized person who is Rh- because it develops antibodies and after one exposure blood will be rejected. If an Rh- person is sensitive to Rh+ blood and receives a transfusion of Rh+ blood, it is likely that the donors cells will be rejected and the blood cells will be killed.
Answer:
The jejunum is the second part of the small intestine, where most nutrients are absorbed into the blood. As shown in Figure below, the mucous membrane lining the jejunum is covered with millions of microscopic, fingerlike projections called villi (singular, villus)
A decrease in the the prey population