How do condensation nuclei contribute to the development of rain and snow? A: they repel water vapor
B: Water vapor condenses on them, creating rain and snow.
C: they have no role in the development of rain and snow
D: water evaporates from them, causing water vapor

the contamination

we are putting to many trash.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101