What did Peter and Rosemary do for a living?

Peter and Rosemary Grant are distinguished for their remarkable long-term studies demonstrating evolution in action in Galápagos finches. They have demonstrated how very rapid changes in body and beak size in response to changes in the food supply are driven by natural selection.

Explanation:

please

the only way i would see could be an autoclicker type software. but that is very time consuming.

answer; defense;