Want this question answered?
External
yes
Internal
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.
externally
All birds fertilize their eggs internally. A male bird has to mate with a female in order for a fertilized egg to be produced.
Some snails can self-fertilize, such as Helix aspersa, but not all snails can.
Snails are hermanphrodites but they will not self-fertilize. Only plants do that.
Lobsters use external fertilization. I don't know how just yet but I am trying to find out. I had this question for homework once and it is hard to find the exactanswer you are looking for.
Internal fertilization and external fertilization. Internal fertilisation means fertilize the egg inside the female's body. External fertilization is fertilize the egg after the female had lay it out. All mammals including platypus and spiny anteater do internal fertilization.
internal external not internal external not
its internal