Under a microscope, a series of cells are observed that lack membrane-bound internal organelles . Which is most likely the cell type

and i oop

explanation:

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

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bioteacher101