The graph shows the pressure experienced by an ocean diver at two different depths. Find and interpret the midpoint of the line segment shown in the graph. 
Definitions:
Nitrogenous Wastes
Metabolic waste compounds that contain nitrogen, commonly produced by the breakdown of proteins and nucleic acids in organisms.
Umbilical Cord
A flexible cord-like structure containing blood vessels, connecting the fetus to the placenta during pregnancy.
Allantois
An embryonic membrane in reptiles, birds, and mammals that is involved in respiration and excretion.
Fertilization
The process of a sperm cell joining with an ovum (egg cell) to form a zygote, initiating the development of a new organism.
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