How many snowflakes are estimated to fall each year

Explanation:

a cubic foot of snow can contain roughly one billion crystals. A rough estimate of the number of snow crystals that fall to Earth per year is "about 1 followed by 24 zeros

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.