To what are greater body size and facial gracility documented in Homo erectus likely related?

Name: To what are greater body size and facial gracility documented in Homo erectus likely related?
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Greater body size and facial gracility in Homo erectus are likely related to changes in technology, as these changes would have allowed for more efficient food acquisition and processing, leading to increased body size, and for more complex social interactions, leading to reduced facial gracility.

To What Are Greater Body Size and Facial Gracility Documented