Wallabies are marsupials, meaning they have a unique reproductive system characterized by internal fertilization. However, like other marsupials, they give birth to relatively undeveloped young that continue to grow and develop in the mother's pouch, which is an external structure. So, while their reproduction starts internally, the young are carried externally in the pouch.
internal external not internal external not
its internal
Is a salmon internal or external?
What is internal and external sources?
internal
external
External. Internal devices would be something like a CD Drive, while an external device is a keyboard or mouse for example.
internal is in and external is out
internal is in and external is out fertilisation
Internal and external? 4real
its internal and then its external. DEERRR
They Have Internal Fertilization