Accually no it doesn't. If it did we would have MILLIONS of fish in the ocean weather we wanted it or not. The fish can lay eggs once then most likely dies.
external
internal
The 2 fertilisation's are external fertilisation, or internal fertilisation. External fertilisation is the type frogs do.
internal is in and external is out fertilisation
internal
VERY INTERNAL
internal
i think internal
Yes
arthropods usually have external fertilization
Yes.
dogs have internal fertilisation which means that thier babies grow inside of them and they do not lay eggs