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.
The difference between a sheep and human mammillary body in the  brain is that in humans there are two lobes in a sheep there is one  lobe.1 person found this useful.he difference between a sheep and human mammillary body in the  brain is that in humans there are two lobes in a sheep there is one  lobe. 1 person found this useful.