Describe how water is important to plants in terms of hydrolysis and dehydration

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

hope this !

2%? i tried finding the exact sorry if it's not 100% correct ; -;

the answer to your question is tooth decay.