Which method is more convenient for you to use ?

Nonpoint source pollution is difficult to control because it

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Ajar contains a certain substance. which observation would show that the substance must be either a solid or a liquid?