Final answer:
Homo erectus displayed changes in subsistence technology, such as the use of advanced stone tools, which influenced their behavior and ability to obtain food.
Step-by-step explanation:
Homo erectus, an ancient human species, displayed changes in subsistence technology that were closely related to their behavior. The use of new technologies and tools, such as advanced stone tools, allowed Homo erectus to adapt to changing environmental conditions and obtain food more efficiently. For example, the Acheulean industry associated with Homo erectus is characterized by handaxes, which were versatile tools used for various tasks including butchering animals and processing plant materials. These shifts in subsistence technology were essential in facilitating the survival and success of Homo erectus populations.