I think the answer is A
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Answer:
The real breakthrough in understanding DNA, however, came with the discovery of its structure in 1953. The discovery of the structure of DNA is often credited to James Watson and Francis Crick.
Explanation:
The Right Verticle of the heart. The right verticle pumps blood from the right atrium to the pulmonary artery where the blood becomes deoxygenized so it can then be sent to the lungs. Hope this helps<3
