Answer:8
There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.
Explanation:
Answer:
i think its 8??? A, B, AB and O and the minus versions of them
Answer
Medicine advertising
Well the doctors are obviously experts in the area of stuff so if a doctor tells you to take a medicine you definitely should.
Answer: That is true.
Explanation: Records are also how people keep history of nations and timelines.
