According to the second law of thermodynamics, what is true of entropy in all natural systems? a. it will always decrease. b. it will always increase. c. it will always remain the same. d. it is impossible to measure. e. it will always equal zero.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive