Greater body size and facial gracility documented in Homo erectus are likely related to:

Question

Quizplus · Accepted Answer

The changes in body size and facial gracility seen in Homo erectus coincide with the emergence of stone tool technology and increased consumption of meat and other proteins, which would have necessitated more efficient hunting and gathering abilities. These adaptations would have provided selective advantages for individuals with larger body size and stronger facial features for processing food.

Greater Body Size and Facial Gracility Documented in Homo Erectus