WITH WHICH OF THE FOLLOWING TOPICS IS THE PASSAGE PRIMARILY CONCERN...
56.With which of the following topics is the passage primarily concerned?
A.The Paleolithic period
B.Subsistence farming
C.Hunter-gatherers
D.Marginal environments
56.With which of the following topics is the passage primarily concerned?
A.The Paleolithic period
B.Subsistence farming
C.Hunter-gatherers
D.Marginal environments