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Qus: The blood of which of the following is rich in carbon dioxide:
Qusनिम्नलिखित में से किसका रक्त कार्बन डाइऑक्साइड में समृद्ध है:
A. धमनियों
B. नसों
C. कोशिकाए
D. इनमें से कोई नहीं
Solution
B. veins
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