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a_sh-v [17]
3 years ago
6

Oxygen-rich blood enters the heart through the _____.

Biology
2 answers:
sasho [114]3 years ago
5 0

Answer:

it is actually pulmonary vein

Explanation:

sergey [27]3 years ago
3 0

Answer:

vena cava

Explanation:

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<h3 /><h3>What is a microscopic smear?</h3>
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