1. Which type of blood cell is the most numerous in the body? O a. red blood cells
O b. white blood cells
c. platelets
d. plasma

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.

When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass