Dead brain cells or blood clots that may cause strokes
I believe it is the connective tissues
I think this says that self esteem is a bigger issue in schools than it used to be. a lot of teens have a low self esteem due to bullying and teasing in school. most of the higher self esteem children are the ones who think they are better than everyone else and they usually end up having a bad attitude towards other people which causes them to have very few friends.
Sex can have negative health consequences. Negative outcomes include, unwanted pregnancy, sexually transmitted infections, internal injury etc.
Mostly fish or aquatic animals can breath though there skin and or gills.
Hope it helped :)