Well, a typical "he" will be male. In human, this means that "he" will produce hormone testosterone and not estrogen which is what "she" will produce. Also, "he" will not have a mammary glands...
Gangrene.
Gangrene is necrosis and subsequent decay of body tissues caused by infection or thrombosis or lack of blood flow. It is usually the result of critically insufficient blood supply sometimes...
Circular reasoning much? This looks like a question taken from a larger document. I'm not entirely sanguine about doing your homework for you, and in this particular case I couldn't even if I wanted...