Tiny droplets form together creating bigger and heavier drops. Once they become so heavy that the air can no longer hold them up they fall. B. Snow crystals form when water freezes inside the cloud. When the snow crystal forms together they form snowflakes. Snow falls because the amount of frozen water in the clouds becomes too heavy for the clouds to hold.
Sleet is snow that melts and refreezes before it hits the ground.
D. Precipitation also falls to the grounds as hail. Hail is actually formed from ice crystals. Water vapor freezes onto the ice crystals as layers. Crystals become larger and larger and finally fall to the earth as hailstones. The water cycle is a major contributor to our weather.