Answer:
D. Cell wall
Explanation:
Cell wall is also present in prokaryotes it is made of peptidoglycan layer.
I'm guessing its so they can be able to diagnose a patient and see whether they need treatment or not
The simple microscopic organisms the only life forms on earth was 560 million years.
<span>Solar Flares-
A brief eruption of intense high- energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances in the earth, as with radio frequency communications and power line transmissions.
</span>