What variables would you add to or change on the simulation to accomplish this?

it's unlikely a majority of a large population would agree on issues

hope this : )

it’s lava came from an explosive eruption

the answer is cell division : )

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.