What is the prehistoric overkill hypothesis, and what evidence supports overkill as the reason for the
Pleistocene extinctions? What is the alternative hypothesis? What will be an ideal response?
The hypothesis states that human hunters were responsible for the extinctions. Extinctions occurred
mostly on North America and affected mostly large terrestrial mammals, whereas previous extinctions
affected many other kinds of organisms. The alterative is that rapid climate change at the end of the Ice
Age killed off the large mammals because they could not adapt to the warmer climate.
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Practitioners of swidden typically plant only one crop per field
Indicate whether this statement is true or false
List and discuss some of the effects that you think weather satellites may have had on the field of weather forecasting.
What will be an ideal response?
Explain briefly the three main categories of spatial relationships available in the Select by Location dialog in ArcGIS.
What will be an ideal response?
The use of government rangelands for the grazing of cattle has
A) resulted in the increased economic productivity of these regions. B) raised funds that are now available to replant these regions. C) produced cooperative relationships between herders to sustainably manage these regions. D) sharply reduced productivity, resulting in economic losses.