During the Pleistocene:
A.Earth’s climate was generally warmer than today
B.glaciers advanced and retreated only four times
C.there were numerous glacial advances and retreats
D.there were no hominins outside of Africa
E.none of these
What is the primary concern regarding the relationship between agriculture and
environmental diversity?
A.The lack of diversity makes it difficult for many of the areas of the world to be
economically independent.
B.The lack of diversity in agricultural products has resulted in a human diet that is
nutritionally deficient.
C.The increased reliance on only few, genetically homogenous species renders them
highly susceptible to disease, drought, and pests.
D.The lack of diversity has resulted in decreased productivity.
E.all of these
Which model of modern human origins employs the forces of gene flow and similar
selective forces as its central premise?