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Why is the color of blood carried by veins dark red? veins are further below the skin and more difficult to see this blood has no carbon dioxide to color it this blood has a low oxygen content this blood
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Why is the color of blood carried by veins dark red?

veins are further below the skin and more difficult to see
this blood has no carbon dioxide to color it
this blood has a low oxygen content
this blood has a high oxygen content

User Sunny Sharma
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the blood has low oxygen content
User Nonsleepr
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