Final answer:
Homo erectus was able to exploit a new adaptive strategy of gathering and hunting, which was crucial for their survival and adaptation.
Step-by-step explanation:
Homo erectus was able to exploit a new adaptive strategy of gathering and hunting, thanks to biological and cultural changes. This strategy enabled them to rely on natural resources in their environment, including fruits, nuts, berries, roots, honey, wild animals, and fish. By gathering and hunting, Homo erectus could sustain their food needs and their survival. Their ability to walk and run longer distances, track and follow game, and explore new territories was enhanced through these adaptations. Gathering and hunting was a crucial factor for their adaptation and survival.