Nina studies an artificial heart model. The model has tubes that supply an electric current to the model. Nina switches on the current that provides an impulse to the heart. She observes that the heart contracts and relaxes. Compare this model with that of a human heart, and place the steps describing how blood flows through the human heart in order.
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The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.
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Compare and contrast physical changes with chemical changes.
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Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~
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Nina studies an artificial heart model. The model has tubes that supply an electric current to the m...
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