Question

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

a. changes in tool technology and increasing access to meat and other proteins.
b. the natural continuation of previous trends documented in hominid fossils, similar to great brain size.
c. the global climate, as these trends are characteristic of an increasingly forested environment.
d. none of the above.

Answer 1

Greater body size and facial gracility in Homo erectus are likely related to changes in tool technology and increasing access to meat and other proteins.

Step-by-step explanation:

In Homo erectus, the greater body size and facial gracility are likely related to changes in tool technology and increasing access to meat and other proteins (option a). The evidence suggests that H. erectus used fire and ate cooked meat, which required more calories and led to changes in teeth and jaws. Additionally, H. erectus had longer legs, allowing them to run great distances and chase prey. These adaptations were advantageous in a changing environment and contributed to their survival.