1. The problem statement, all variables and given/known data Hi guys, I am working on a 'daisy world' lab for an environmental systems class. I will share the lab link as it is free: http://www.gingerbooth.com/flash/daisyball/DaisyBall.html Essentially, we focus on a very simplified world where the world is either barren soil or white daisies. The luminosity (solar radiation) is increased and white daisies start to populate the planet. This causes a major change in albedo, so we get less warming (negative feedback). Eventually the white daisies die due to too much heat and we level off. One of my questions ask: Explain the details of the temperature curve of the world with daises, relative a barren world without. Is this system self-regulated?.... My question is, what does self-regulated mean here? 2. Relevant equations 3. The attempt at a solution I am initially predispositioned to answer "YES" as the system has the few variables, when the runaway heat occurs, the daisies die and the system continues on, self regulating itself. The concern I have is, is the solar lumionsity part of the system? Do we consider the "sun" part of the system of the Earth? If so, then yes, this is all self-regulating.