Does a koala live in Europe?
No. Koalas are not found in Europe. They are endemic to Australia, meaning they are not found on any other continent or island.
No. firstly, alas are not decomposers. They are consumers. Secondly, koalas do not live in the desert, or the savannah. They can only live in sclerophyll forest composed primarily of certain types of eucalyptus trees. Thirdly, a koala is not a bear. It is a marsupial. To refer to it as a "koala bear" is wrong.