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.
The difference between a mole and a wart is that moles are not contagious, but warts are. A mole, or nevus, is a collection of skin pigment cells. When they are small, they look like small brown dots. When the collection is larger, and slightly deeper, it can cause a raised skin colored bump over it.
Difference Between Mink and Weasel. Mink and weasel are two closely related animals with very similar characteristics. Sometimes both mink and weasel have been named under the same generic name, but sometimes not. Therefore, it could be quite confusing for any unfamiliar person to understand the difference between a mink and a weasel.