> "could you say a few words about Lotka-Volterra"

I wrote something recently about L-V in an applied context here : https://geoenergymath.com/2020/03/29/lemming-fox-dynamics-not-lotka-volterra/

> "Also, what specific classes of questions are well addressed through simulation."

For real-time software development everything is done through simulation. Every software thread corresponds to a Petri net token stepping through the source code. Can even simulate logic designs with Petri nets as we described in this paper: https://dl.acm.org/doi/pdf/10.1145/1315580.1315592