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rios12andrea12

Answer:

In the U. S. the average distribution of blood types is: O-positive: 38 percent. O-negative: 7 percent.Ma

Explanation: hope I get brainliest:D

angelbaby82
Answer:

There are 4 main blood groups: A, B, AB and O, of which group O is the most common. In the United States, the average distribution of blood types is as follows: O-positive: 38 percent. O-negative: 7 percent.

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