Dorothy is the brand-new infant of Nanette, a young single mother. Nanette isn't much interested in Dorothy. She is careless in feeding her, and leaves her wet and uncomfortable to cry it out. One of the things we might expect of Dorothy is .

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