HELP FOR SCIENCE QUIZ The processes of photosynthesis and cellular respiration are involved in the
cycling of carbon among organisms. Which biotic factors PRODUCE
carbon dioxide that is used in photosynthesis?"

O animals
O plants
O water
O both animals and plants

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