Answer:
cell
Explanation:
The cell is the smallest unit of life that can divide, multiply, grow and respond to stimuli from the environment.
All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms.
Atoms are the smallest and most fundamental unit of matter.
So it is not Atoms as most people think, it is Cell.
The earth's crust is the outermost layer of the planet. it is very thin and is just like the skin of an apple. the crust is about 3-5 miles thick and about 25 miles thick under the continents.
It is currently a noun or pronoun that is in the footsteps of the preposition in a sentence
I would say it is B it. I'm not 100 percent on this one.
