Lack of adequate oxygen due to reduced oxygen partial pressure is .............
Hypoxia
Hypoxia is a deficiency of oxygen reaching the tissues. One common cause is a reduced partial pressure of oxygen in inspired air, as at high altitude, which lowers arterial oxygen saturation.
Hyperoxia is an excess of oxygen in tissues, ‘oxygen abundance’ is the opposite of a deficiency, and hypotonic describes a solution with lower solute concentration, not oxygen supply.
Hence, lack of adequate oxygen due to reduced oxygen partial pressure is Hypoxia.
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