The correct answer is microglia.
<span>Microglia is glial cells found in the central nervous system with the protective role. Because they are the resident macrophage cells, they act as the first and main form of active immune defense. Microglia is constantly cleaning the CNS for plaques, damaged or unnecessary neurons, and infectious agents, like viruses or other microorganisms.</span>
Around 93 million miles (150 million kilometers) away.
Aero is the prefix for oxygen or air
Aerobic= needs air
Anaerobic=no air needed
It is C. Because the other 3 are in side of the the cell membrane to be protected.
Prokaryotic are the cells that dont have a necleus or other important membranes of a cell and eukaryotic are just normal cells i think