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A. There are double bonds present in the fatty acid chains of a polyunsaturated fat but none in a saturated fat.
That is the right answer >_>
The answer is A because the heart pumps blood from the heart through pulmonary artery that is low in oxygen and high in carbon dioxide concentration, to the lungs.
What is the type of sunflower, and how fast does it use photosythesis?
Answer:
well it's not really alive it just makes bread rise
Explanation: