Can someone help me fill In the 2 blanks pls (8th grade science)

not sure if this is what you'r looking for eubacteria and archaebacteria

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