Wiki User
∙ 10y agoIt feels better
Wiki User
∙ 10y agoIt depends. Are you talking about humans? 8D Humans use internal fertilization but the disadvantages in external fertilization is that a small number of eggs survive.
internal same like humans
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.
Internal fertilization is where the egg is fertilized inside the body(such as humans) and external fertilaztion is where the an egg is laid and then fertilized. Such as in fishes!
Internal. Dogs mate through copulation and internal fertilisation, like all mammals (including humans).
Butterflies have internal skeletons, known as endoskeletons. Their endoskeletons provide support and structure to their bodies, allowing them to fly and move efficiently.
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.
Internal.
External takes place outside the female, as with fish eggs on which the male fish places his sperm. Internal fertilization, in plants and animals, takes place within the organism's structures, where the gametes are joined. In humans, in vitro fertilization (i.e. test tube babies) is a form of external fertilization in that it bypasses the normal occurrence in the fallopian tubes, and then directly implants the fertilized egg(s) in the uterus.
Some examples of animals that undergo external fertilization include fish, amphibians, and many invertebrates such as sea urchins and corals. External fertilization occurs when eggs and sperm are released into the environment where they meet and fertilize outside of the body.
external digestion..........
HUMANS!!!!!!!!!!!!!!