Certain types of rocks form deep inside earth:)
The answer to this is bioethics.
Bioethics is the ethics of medical and biological research
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The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.