Answer:
the presence of cell structures in the cell
Explanation:
<em>If you do not know the reasoning behind this, you may want to read the explanation assignment the teacher adds, or do more research, look at notes, or pay attention during class :)</em>
Nucleation, Mechanics, And time
In the attachment are some examples:
The phase contrast microscope uses out-of-phase and in-phase light rays that produce contrast areas allowing scientists to detect even a minute number of protein molecules and focus on the minute internal structures of a particle.
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