system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What is the difference between a shrub and a tree?


assistant
Some biologists maintain that there is no genetic difference between shrubs and trees - some species may have expressions in tree form and shrub form.  Other scientists believe that the physical form is essential and that shrubs are distinct from trees.