Answer:
I think it's the Hawk because it kinda eats every other animal of the list....
Persons with O blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibody anti-b in their plasma.
ABO blood grouping was discovered by Austrian scientist Landsteiner. It consist of four blood groups- A, B, AB, & O.
Red blood cells have certain extension of the proteins that are called antigen. Two types of antigens are there antigen a & b. The RBCs which have a particular antigen will not have the antibody against the same.
Blood Group A has antigen A and antibody B. Blood group B has antigen B and antibody A. Blood group AB has both antigen and no antibodies while blood group O has no antigen and antibody A & B.
To learn more about red blood cells here
brainly.com/question/17890844
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Answer:
When you get sick first time your body will produce antibodies and destroy that bacteria or virus after producing that antibody your body has memory cell specialised for that antibody so you won't get sick everytime when you get that specific type of antigen