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Biology 15 Online
OpenStudy (anonymous):

Human blood type is based on the presence or absence of what substances in the blood? A. Antigens B. Autosomes C. Pedigrees D. Red blood cells

OpenStudy (anonymous):

A. Antigens

OpenStudy (anonymous):

What grade r u

OpenStudy (anonymous):

me

OpenStudy (anonymous):

9 and you

OpenStudy (anonymous):

8th

OpenStudy (anonymous):

this is so easy

OpenStudy (anonymous):

damn and you are smarter than me :c XD

OpenStudy (anonymous):

aren't you suposed to be out of school by now?

OpenStudy (anonymous):

yes XD

OpenStudy (anonymous):

Antigens

OpenStudy (anonymous):

why rn't u

OpenStudy (anonymous):

because i fail biology

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