internal. the male needs to 'mate'with the female
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