Sinkholes are associated with which type of landscape?
A) Glacial
B) Karst
C) Volcanic
D) Fluvial
B
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Which is a characteristic of feudalism?
A) a stable and conservative world that changed relatively little B) dominance from a military class that represented the interests of the masses C) large cities that had different sectors based on specific economic roles D) ports that were linked to one another through an advanced system of bookkeeping E) world trade
Approximately how much of the air we breathe is composed of nitrogen and oxygen?
A. 99% B. 66% C. 50% D. 33% E. 10%
Biofuels and nuclear power may prove useful ________
A) as pollution-free sustainable energies B) as stages in the development of fusion generators C) to bridge the time between fossil fuel depletion and new renewables D) as inexpensive technologies for developing nations E) as replacement fuels for motor vehicles
Suppose you were standing on a solid surface when S-waves from a nearby earthquake arrived and you could feel them. What ground motion sensation would you feel?
A. The ground would move vertically beneath you, moving you up and down. B. The ground would move both vertically and horizontally at the same time. C. The ground would move horizontally beneath you, shaking you side to side.