The flakes and choppers discovered in Olduvai Gorge, Tanzania, constitute the beginning of the Old Stone Age, also called the __________.
Fill in the blank(s) with correct word
Question 2
The problem with the kinds of definitions of racial groups devised by 18th century Swedish naturalist Carolus Linnaeus is that, besides being ethnocentric:
a. they confuse biological traits with cultural characteristics.
b. they do not include all of the traits by which these races are distinguished.
c. they are not scientific enough that is, they do not include the frequencies with which these characteristicsoccu r in the population.
d. they argue that certain groups are superior to others because of their geographical location.
e. they include too many categories to be functionally useful.
Bayliss and Starling discovered the mechanism by which the small intestine and pancreas work togethe
Harland and colleagues discovered the morphogen noggin using expression cloning.
Leopard in a tree in the Serengeti, Tanzania
Varicella or chickenpox, a viral skin infection. In this photograph, the rash is beginning to form s
Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f
A recently discovered fossil of a missing evolutionary link is shown on the right, and a ...