Answer:
Water potential 
Explanation:
As we know,
Water potential is equal to the sum of pressure potential and solute potential
Ψ
ΨS
ΨP
Where Ψ is the water potential
ΨS is the solute potential
ΨP is the pressure potential
Given -
Solute potential ( ΨS ) 
Pressure potential ( ΨP ) 
Substituting the given values, we get -
Ψ

Ψ

Aerobic respiration, is your answer
Hydroxyapatite is the major component of bone that contributes to its hardness.