Natural selection drives changes in the Galápagos finch population towards larger beaks due to a drought-induced shift in seed availability.
Natural selection is a key mechanism in evolution where organisms with advantageous traits survive and reproduce at higher rates, leading to changes in the population over time. In the case of the Galápagos finches, a drought caused a decrease in small, soft seeds, favoring birds with larger beaks that could crack open the tougher, larger seeds available. This resulted in an increase in the average beak size of the finch population, showcasing evolution through natural selection.
https://brainly.com/question/1657375