Natural selection: the interaction between organism and environment.
Acceleration determines the direction of velocity. Velocity is a vector quantity that includes speed and direction, while acceleration is the rate of change of velocity. If an object is accelerating, its velocity is changing, which means its direction is also changing.
The direction from which light hits an object determines the direction of the shadow it makes
The direction of torque determines the direction of rotational motion of an object. Torque is a force that causes an object to rotate around an axis, and the direction of the torque applied determines the direction in which the object will rotate.
The verga!
A long generation time makes for a slow evolution rate, and a short generation time makes for a fast evolution rate.
Thyroid gland determines the rate at which human body utilizes energy.
The major factor that determines the metabolic rate is the amount of lean body tissue. A feature of the basal metabolic rate is pregnancy increases the BMR.
weathering and erosion
inflation
Concentration gradient determines the direction of flow.
The rate at which magma cools determines the size of the mineral crystal.
The rate of a reaction is calculated using the concentrations of reactants.