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the osmotic pressure that develops within the cells of a root system that causes the sap to rise up through a plant stem to the leaves.
the volume of air that is inhaled and exhaled during normal breathing.
the cartilaginous flap at the top of the mammalian trachea, which closes off the entrance to the...
the process whereby certain substances are removed from a liquid and others retained, due to...
when the entire heart, both of the atria and ventricles, is relaxed.