Which of the following is a proposition?
a. The heart pumps blood throughout the body and it keeps us alive.
b. Be thankful for being alive.
c. Does it break your heart?
d. Take courage and have a happy heart.
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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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