Since this was a simple abrasion (it would really be the same for anything), this was thanks to the human body's cells multiplying. His damaged skin cells are being replaced with brand new ones, any red blood cells he lost already being replenished.
I think c is the answer not sure though
Bacteria is used to produce human insulin
There are not several examples of thermal equilibrium, but only one case: Equal temperature everywhere and constantly along time, with no heat transfer. ... Then, leave the time pass and any inner temperature gradient will disappear by inner heat transfer until temperature is uniform and constant.
