Self-compatibility (SC)
Mechanisms of single-locus self-incompatibility
i believe those are two of them
<span>There are no choices given, but the event was most likely a physical one that would have barred the squirrels from seeing each other. Squirrels are a social creature, and the event that would have separated the populace could have been anything from a large fire to an earthquake that separated the squirrels from each other.</span>
True :) Acid cant burn its self.
