shuntelle is interested in studying the relationship between self-esteem and school grades. she wants to be able to quantify this relationship but wants to avoid any ethical concerns regarding the manipulation of these variables. what sort of method is the best option for shuntelle?

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.