Evidence from ancient skeletons suggests that the first mammals appeared over _______________ million years ago, whereas the earliest primates first evolved approximately _______________mill ion years ago.
a. 200/65
b. 265/150
c. 175/65
d. 100/5
Question 2
Which technique of making tools involves the preparation of a striking platform at one end of a specially prepared core, after which three or four long, triangular flakes are detached, leaving a nodule shaped like a tortoise shell?
a. Oldowan
b. Acheulian
c. Paleoindian
d. Levalloisian
e. Mousterian
Horns and antlers in mammals.
Ancient Greek rhyton in the shape of a dog's head
Ancient Babylonians
Four kinds of evidence supporting the theory that species evolve.
Ancient Egypt
In crocodilians, birds, and mammals, the heart has four chambers: two atria and two ventricles. Oxyg