Clone of Scallops and Rays

Pagandai V Pannir Selvam
For ModSim 2016 auditorium session: "Introductions, Stocks and Flows, and How to Begin"

For the interpretation of the variables, see "Lotka-Volterra equations" on Wikipedia.

Note that we used a simulation time step of 0.01 years (click Settings to change this). If you don't, you will get strange results, for reasons we will discuss next week.