Jingszo !

The wide array of diverse life-forms on this planet are a result of millions of years of selection and adaptation driving morphological change.

We can look back at fossils and identify changes over time, but it is difficult to identify another key component of adaptation in the fossil record: that of behavior.

The theory of behavioral drive posits that behavioral change can expose animals to new selective regimes, leading to adaptive morphological change over time. Fannin et al. looked at isotopes in hominin fossils to characterize a dietary shift to graminoid plants, finding that this shift predated adaptive tooth changes by 700,000 years and confirming the presence of behavioral drive.