Living organisms share certain characteristics of life. Two living organisms, a pine tree and urchin, which statements describes a difference in one of the characteristics of life shared by these organisms?

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

c

explanation:

b) the inside picture would look at a very high temperature in a very low ph

if you know your abc's you should be able to get your answer or just use google