How does saliva maintain the pH of the mouth after bacteria produce acid from the carbohydrates we’ve consumed?

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Will mark brainliest how many electrons can be held in the energy level n = 4?

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.