Why does blood turn dark red as it circulates through the body?

It starts to clot

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It gets old and dirty flowing through the body

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The oxygen in it is replaced with carbon dioxide

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None of these

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Solution

The correct option is C
The oxygen in it is replaced with carbon dioxide

O₂ is consumed by the tissue to release energy and CO₂ is released into the blood which makes it dark.

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Why does blood turn dark red as it circulates through the body?

The correct option is C The oxygen in it is replaced with carbon dioxide O2 is consumed by the tissue to release energy and CO2 is released into the blood which makes it dark.

The correct option is C
The oxygen in it is replaced with carbon dioxide

O₂ is consumed by the tissue to release energy and CO₂ is released into the blood which makes it dark.