Electromagnetic waves differ from each other in a) frequency only b) wavelength only c) frequency and wavelength d) frequency, wavelength, and velocity

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.