How does the spinal column differ between an adult human and a ...

[frankwu]

How does the spinal column differ between an adult human and a chimpanzee?
 
  a. The chimpanzee spine is straight, whereas the human spine has one long curve.
  b. The human spine is straight, whereas the chimpanzee spine is curved.
 c. A chimpanzee spine has a series of convex and concave curves.
 d. A human spine has a series of convex and concave curves.

Question 2

Diffusion was a powerful force during the Neolithic, carrying products, people, and their languages and cultures.
 
  a. True
  b. False
  Indicate whether the statement is true or false

[yuyiding]

Answer to Question 1

d

Answer to Question 2

True

[frankwu]

Thanks for the timely response, appreciate it

[kthug]

Great answer, keep it coming