Early humans in the Lower Paleolithic Age lived in assorted habitats which allowed them to gather seafood, nuts,eggs, and fruits not collected by scavenging. Hunting and gathering was thought to be the main strategy used by human societies to collect food about 1.8 million years ago, and from its re-appearance about 0.2 million years ago. It remained the only way of collecting food until the end of the Mesolithic period about 10,000 years ago. Beginning in transition between the Middle to Upper Paleolithic period, some hunter-gatherers groups began to specialize, concentrating on hunting a smaller selection of larger game and gathering a smaller selection of food. This newly specialized type of work also involved creating specific tools such
