Answer:Plate tectonics explains why Earth's continents are moving; the theory of continental drift did not provide an explanation. Therefore, the theory of plate tectonics is more complete. It has gained widespread acceptance among scientists
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Answer:
If the mitral valve doesn't close properly, systemic circulation will be affected.
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it migth be B i am not sure
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Its the hydrologic cycle
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Hopefully this helps!!! Im srry if it isn't
