The relative atomic mass of an element is: a. the mass of only the neutrons in the atom's nucleus. b. the mass of its atoms compared to the mass of a carbon-12 atom. c. the mass of its isotopes compared to the mass of a normal atom. d. the mass of its atoms averaged over time.

can you attach a picture of the lettuce? : )

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.