Markus moved into an apartment on a busy city intersection. Initially, the noise from the traffic kept him awake. After living in his apartment for a few weeks, however, the noise no longer bothered him and he slept throughout the night. This example demonstrates the behavioral process of:

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between