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.
Red River gum trees, one of the species of eucalyptus that provide koalas with both food and shelter. The reddish brown area indicates where koalas live along the eastern coast of Australia. Koalas live in along, narrow strip of eastern Australia, near the coast of the Pacific Ocean.