C. Rewrite the given sentences correctly: 1. Humans have a pair of hearts
. 2. The heart is a muscle that works only when we are awake
3. Blood flows through vessels called windpipes.
4. Blood vessels are of two types-arteries and veins.
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Answer:
Blood flows through vessels called windpipes.
Explanation:
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Explanation:
human have a pair of heart.
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