I can’t see the model but perhaps the pimple has stayed in the persons skin to long and grew infected? Like I said I’m sorry but I can’t see any “model” but I do hope this helps.
C) The viewer's eye
I had biology last year and i passed it with a A+ and i know everything about microscopes and such.
Micrometre, also called micron, metric unit of measure for length equal to 0.001 mm, or about 0.000039 inch. Its symbol is μm. The micrometre is commonly employed to measure the thickness or diameter of microscopic objects, such as microorganisms and colloidal particles.
