internal
internal
they use external fertilization.
No external fertilization is not present in the common house fly. House flies reproduce via sexual reproduction and internal fertilization.
external sexual
Nope - they reproduce by internal fertilization.
Internal. Dogs mate through copulation and internal fertilisation, like all mammals (including humans).
Squids could have BOTH. It depends on the type of species that squid is.
they have external fertilization , PS i learned it in science :P zz this is all wrong...it does NOT use exernal fertilization...external fertilazation is for fish and stuf,but internal is for humans and mamals.
Stingrays reproduce using internal fertilization. They are known to give life birth in the ocean to many infant stingrays at a time.
All birds fertilize their eggs internally. A male bird has to mate with a female in order for a fertilized egg to be produced.
Polar bears mate and carry out a pregnancy. A mother will usually give birth to two cubs at a time.