What are marsupials?

Marsupials are the Marsupialia selires. Because Marsupials do not develop placenta like other animals, their youngsters are born prematurely when they are incubated in a case known as Marsupium. Many people are familiar with Australian marsupials such as Koals, Kangaroos and Wombats, and Marsupials, can also be found in America, especially in the form of roasts. They all said there were about 260 individual Marsupial species. Over time, the marsupials were pushed out by placental mammals who probably developed features that allowed them to survive more successfully. It is assumed that the Marsupials in Australia and the surrounding areas have performed especially because of the relative isolation of the Australian continent, which allowed Brodivy to prosper.

When the mammals behave and the young gestures, they create what is called the placenta, an organ that supplies the evolving embryo nutrients from the mother's blood and toxin filters. Marsupials instead develop a yolk bag that after fertilization nourishes the embryo to a short intoBU. When the embryo comes from nutrients, it is born in an extremely premature and very insufficient state, it looks like just a little more than shrimp.

Embryo marsupial is too fine to face the outside world, so instead it is heading to Marsupia, where it fits firmly and receives nutrients in the form of milk and grows to the full period of the child. Many young marsons continue to live in the housings of their mothers for some time after being able to face the world and spend more time out of the housing until they eventually branch themselves.

Marsupia processing is quite difficult because the embryo must climb to its mother to reach the pouch. As a result, the embryos have a very well developed forearm that are used to raise. As soon as they fit into the case, they are often so tight that they cannot be removed without injury; People initially believed that Marsupials were solely gestured in the housing and claimed that eMbryo was obviously firmly attached to the wall of the case.