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True [87]
3 years ago
7

Blood returning from the body (systemic circulation) first enters which chamber of the heart?

Biology
1 answer:
miskamm [114]3 years ago
5 0
Right atrium because
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Explanation:

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The formula for this reaction would be

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The first part of the reaction are the reactants and the second part is the product.

The reactants of this reaction are N and H3.

Or you could say the reactants are nitrogen and hydrogen

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