All of the following except which are features of primates?
a. increased brain size
b. stereoscopic vision
c. opposable thumb
d. grasping hands
e. more specialized teeth
Question 2The evolutionary trend in mammal size during the Pleistocene could have been in response to:
a. global warming when there was more food available.
b. cooler temperatures because large animals retain heat more efficiently.
c. protection from predation of other organisms.
d. increased predatory ability.
e. decreased metabolic requirements
