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.
An adult koala eats between 200 to 500 grams of leaves each day. Koalas eat mainly eucalyptus leaves (gum leaves). Occasionally they will eat the leaves from some other native Australian trees, and they also use certain trees just for resting in. Koalas live in tall open eucalypt (gum tree) forests. The areas of bushland where they like to live are called their HABITATS.