Yes, it is perfectly natural. This happens as there is hormonal imbalance which causes sudden mood changes.
Yes, In fact, most teenagers (any male going thorugh puberty) will have a slight curve in their penis, whether it is left, right, up down....anyway, it's completely normal
Whenever you are sexually attracted to someone but if your going through puberty it can randomly happen.
it is normal
Yup. You are going through puberty it definitely is normal
No. It is not normal to barf, due to puberty. Maybe you have another problem you should get checked out.
No, this doesnt cause cancer. Cancers are caused by mutations of the normal cells, there is no mutation in puberty.
It's normal.
If you are a man(or still going through puberty) this is normal.
Of course not! Most guys do have it though, its very normal.
Yes, hair growth is normal for a boy going through puberty. However, at 13, I very much doubt you're at the end of puberty. Most males end puberty at around 16 or 17.
uhh yeah, thats pretty much one of the main effects of puberty. deeper voice.
It is perfectly normal that as people mature, their taste will change.