Coming soon: Peak Oil Spillover!
I spent 100 GG so you can read this.
Chris Coyote wrote:
iirc you can learn each evolution ability only once. So while this picture does illustrate the rule, it is still played wrong.
While you remember correctly, the rule is followed in this picture. Each of the three population square types is pictured on only one evolution marker, so the ones used here must be two different evolutions.
edit: Unless more than 1 copy of this expansion was used, of course.