Question

All of the following would have to be considered if we found a human fossil in the Cambrian rock layer EXCEPT ___________________________.
A.

our understanding of human evolution may need to be altered

B.

our understanding of vertebrate evolution could remain unchanged

C.

our understanding of Earth’s conditions during the Cambrian Period may need to be altered

D.

our understanding of the start of mammalian evolution may need to be altered

Answer 1

B. This is because we have a highly complex vertebrae system that would mean the most simple forms would be much older than though if the human fossil was real.