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Drupady [299]
3 years ago
13

What is the advantage of having valves in the

Chemistry
1 answer:
fenix001 [56]3 years ago
6 0
The valves stop the blood from flowing backwards
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<h3>How to determine the mole of sodium sulphate Na₂SO₄</h3>
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<h3>How to determine the mass of sodium sulphate Na₂SO₄</h3>
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