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Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?
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1. beginning with all chambers of the heart in the "relaxed" phase, describe the cardiac cycle in mammals, with systole and diastole of the atria and ventricles. for each time point in the cycle you select, state the following: • whether the atria and ventricles are contracting or relaxing • whether the av valves and semilunar valves are closed or open • whether the pressure in the atria and ventricles is high or low
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Which of the following is a producer? . a.. a crow that consumes a dead animal on the side of a roa...
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