Final answer:
Altitude-induced hypoxia is countered by the body's acclimatization process, which adjusts the respiratory system to cope with lower oxygen levels by producing more red blood cells.
Step-by-step explanation:
A deficiency in the biological adjustment to altitude-induced hypoxia relates to the body's ability to acclimatize to lower oxygen levels at high altitudes. Acute mountain sickness (AMS) is a condition that occurs when there is acute exposure to high altitude, leading to symptoms like headaches and nausea due to low partial pressure of oxygen. Over time, with continuous exposure, the body undergoes acclimatization, adjusting the respiratory system and stimulating the production of erythropoietin (EPO), which in turn increases the production of red blood cells, thus, improving oxygen transport throughout the body despite lower oxygen saturation.