Imagine you are inside your home watching this beautiful sunset from your window. Think about the path the sunlight had to travel to the Earth and describe the three types of media it had to travel through.

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.