The correct answer is their blood lacks A or B antibodies.
People with type AB blood have A and B antigenes on the surface of red blood cells (RBCs). Antigen AB has no antibodies, thus, transfusion can be considered safe ( the serum of the recipient does not contain antibodies for the blood cell antigens of the donor).
1. when a earth worm eat it deposits nutrient by pooping
2. earth worm, feed grass, feed cow, human eat cow
D a wolf’s sense of smell.
