The existence of a pouch in all marsupials demonstrates that they share a common ancestor. The presence of a similar trait, such as the pouch, indicates a shared evolutionary lineage among these animals.
Marsupials are animals the carry their babies in a pouch. The existence of a pouch in all of these animals demonstrates that they -
marsupialtypes.jpg
Have the same bone structure
Share a common ancestor
Are the same species
Use the pouch to store food
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