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4 Cards in this Set
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- Back
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areas of the heart |
dogs have to have a big enough heart Cytoplasm Right Atrium Left Atrium |
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1. Vena Cava
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This Vein bring deoxygenated blood into the heart from the body (right atrium).
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What is a Comet
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A comet is a chunk of frozen ice and dust that travels in a very long orbit around the sun.
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What is a Galaxy?
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A galaxy is a huge collection of gas, dust and hundreds of billions of stars.
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