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The prefix "cardio" refers to

aerobic

heart

with oxygen

anaerobic

User Pokeb
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2 Answers

13 votes

Step-by-step explanation:

The prefix "cardio" refers to HEART

User GotBatteries
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Answer:

Even just looking up the meaning of the prefix "cardo" we can determine that it has to do something with the heart. The word cardio comes from the Greek kardía, which means "heart".

Option B, heart

User Yttrill
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