Answered

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How will you describe the sequence of oxygen, carbon dioxide and blood flow?

Sagot :

JovinceCandelario
When You Inhale Oxygen come in it goes through trachea bronchi and lungs and blood carry oxygen to the body cells to remove carbon dioxide
Dannymal
1. Inhale Oxygen
2. Goes to lung (bronchi - alveoli)
3. Exhale Carbon Dioxide

How to know that blood is with O2 or CO2:

Vein = Blood + CO2 = Blue
Artery = Blood + O2 = Red 
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