If humans can see water but not air, can fish see air but not water??

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Which suspect most likely committed the robbery and how do you know

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.