In the diagram, which letter represents the activation energy? A B C D

What three natural resources are found in the great lakes region

Why do cells appear different in distilled water than they do in 10% salt water?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.