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The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.
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not giving the answer choices is not an advertising technique
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Grading system helps students figure the amount of knowledge they have gained. Grades can also help students making decisions about their career. Without grades, how students would show how much they have learned?
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This is very true! Hope this helps
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