Well written content friend, you have added extra knowledge which is very good and explains the blood in details.

• You discussed the meaning of "blood" which can be also explained as the body a machine and blood as a current in it, when blood is running in the body it is working.
• Explaining blood groups and making table for acceptors and donors of blood groups.
• That, blood group A rejects blood group B by creating antibodies against them.
• The table is very creatively designed to explain the acceptors, donors and to illustrate the universal acceptor/donor.