1.they live in a sedentary lifestyles because they have small brains and for what they eat. 2. because it would become a problam because the extrameness 3.by hugging the tree.there favorite tree is the acacia tree. 4. Koala offspring, which are the size of a small bee and blind when born, spend the first six months of their life nestled inside the mother's protective pocket and the next six, clinging on to her back or belly. .