A fundamental constant is one that has to be measured by experiment, rather than being derived from any other quantities. Which values we choose to make fundamental and which ones are derived are somewhat arbitrary.
Koalas are native to southeastern and eastern Australia, living in forests of eucalyptus trees. They are basically sedentary animals that need to sleep a lot to give them time to digest their food. Being on the ground all the time would be a disadvantage, because predators could catch them easily.
Koalas are originally from the eastern region of Australia -- think Victoria, New South Wales, Queensland -- and some parts of the South Australia state, which has a central location. They were brought to western regions of Australia and also to islands such as Magnetic Island, French Island and Phillip Island.