The majority of the fossil evidence of the earliest hominins has ...

[penza]

The majority of the fossil evidence of the earliest hominins has come from __________.
 
  a. the Congo Basin in Central Africa
  b. the Great Rift Valley of East Africa
  c. sub-Saharan regions in Chad and Niger
  d. South African caves

Question 2

The reduction or loss of cranial crests in hominin species represents __________
 
  a. the need for greater room for muscles associated with chewing
  b. the de-emphasis on protection for the cranial case
  c. a de-emphasis on chewing as well as a greater emphasis on brain size expansion.
  d. a reduction in the size of neck muscles associated with quadrupedalism

[shoemake]

Answer to Question 1

Answer b

Answer to Question 2

Answer c

[penza]

Wow, this really help

[alvinum]

Thanks for the timely response, appreciate it