Amost harmful paraphilia is 2. fetishism sexual sadism transvestic fetishism voyeurism

A most harmful paraphilia is sexual sadism. This is a kind of paraphilia that involves inflicting pain, humiliation, fear or any kind of physical or mental harm to another person, in order to experience sexual pleasure. These acts may cause severe damage or even death of another person.

helicase, i think thats it

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".