Which area of study has a name that did not originate from the greek language

occurs when oxygen concentrations fall below 2 mg per mL, can result in the death of sessile organisms, occurs when respiration rates exceed oxygen replenishment via circulation.

Explanation:

Hypoxia is a dangerous medical condition that refers to the decrease in oxygen levels to an extent that there is a serious deficiency or shortage in the  oxygen supply to the tissues.  Here, the term circulation refers to the blood circulation and this blood circulation acts as a transporter for oxygen. The term oxygen concentration means concentration of oxygen in blood. Also, death of sessile organisms is caused by lack of oxygen supply and therefore, Hypoxia causes it.