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Andreyy89
3 years ago
15

Four different blood types are found in human populations because of _______________ and _______________.

Biology
1 answer:
larisa [96]3 years ago
5 0

Answer:

of <u>your</u><u> </u><u>body's</u><u> </u><u>natural</u><u> </u><u>defences</u><u> </u> and <u>presence</u><u> </u><u>or absence of certain antigens </u>

Explanation:

mark me as brainliest if it helped you

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