Single-celled organisms may move using A. flagella. B. cilia. C. pseudopods. D. all of these

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

to this answer it would be edge enhancement

answerhomologous structures;

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