Nikki was putting together a presentation about the geologic time scale to share in class. What is the purpose of the geologic time scale?

All of the following are part of the biosphere except

Which material burns faster? metal aluminum

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