Hi, I'm taking an ecology course and I need to model some kind of population/system for a final project. The problem is, I'm a physics major and know almost nothing about real biological systems, so I'm looking for suggestions of real systems that are simple enough to model fairly realistically in a school project. Well-studied systems with a good amount of literature behind them would be ideal, but anything I can find good data on will work. There's no real guidelines, it could be aquatic, terrestrial, whatever! It doesn't even have to be strictly biological. I'm open to suggestions, so if you have any ideas please share!