Class Trematoda: Infect the internal organs of hosts. Parasitic Can be endoparasites (live in the host) or ectoparasites (attach to external surfaces of the host. Size: ~ 1 cm to 10 cm Covered in an unciliated cuticle. Usually require 2 hosts to complete it's life cycle.
Warts are generally caused by a human virus known as papilloma while moles are generally related with age and caused by hormones and environmental factors. There are cases when kids are born with moles but in general moles on the face increase with increase in age.
Genital Wart Vrs Tag: The difference between genital warts and a skin tag is very distinctive. Genital warts are the result of a sexually transmitted disease (std). A skin tag is the result of age, pregnancy, obesity and heredity. In addition, other factors (such as symptoms) make these two conditions different.