Thank you so much for the query you have made. You have to know those sexually transmitted diseases are caused by unprotected sex. When a male and female get intimate with each other and the intimacy reaches the level of sexual desires then a sexual intercourse takes place. One has to understand that sex should always be done with a single partner only as this prevents a person from getting any type of STD’s. Though it may sound imperfect but eve3n a single partner can also fulfil the sexual desiresand one does not need to look for different people for having sex. It is worth noting that any kind of sexual relationship should always be made after knowing each other well. The physical intimacy is without any emotional touch is not the right way to do it as it increases the risks of getting STD’s. Many of the STD’S are incurable or take a lot of time. You need to think twice for having unprotected sex with an unknown partner because he or she might be the carrier of STD’S. The treatment of STD’S cannot be done at home and one has to visit a doctor because in these types of diseases there is no surety about the type of diseases one has contracted and to what intensity it is. One also is unaware about the fact that how harmful it can be in the future. To give the answer of the second part of your question, the genital warts are very small and soft growths on the genitals of the human body. They are mucus membraneson penis and vagina that are developed due to certain kinds of infections that are caused when a couple have unprotected sex. Women can also genital warts on their urethra.