The quantity of mass contained within a volume is called its Density. Actually the quantity of Mass per unit Volume is Density , by Definition.
A physical quantity that is specified by both magnitude and direction is a vector by definition.
It is called direct variation.
That's called a "scalar" quantity. Examples include temperature, speed, and energy.
mass
Variable
The answer is variable
FIELD
A quantity supplied is more than quantity demanded its called A Surplus.
diapers are often changeable
The quantity of matter in an object is called mass.
by "Changeable" do you mean blending? if so the Chameleon
I think it is changeable
The root word of "changeable" is "change."
They are the Amendments. There are currently 27 Amendments to the US Constitution. The first 10 of which are called the Bill of Rights.
The difference between actual quantity and standard quantity is called the material quantity variance.
The pulse rate, since it's dependent on the quantity of caffeine, which is the changeable, independent variable.