Automatic, or simple reflex, behavior is commonly referred to as a. conditioned response.
b. spatial motivation.
c. unconditioned response.
d. operant conditioning.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

d.

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i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.