Explain why karst is common in some areas and absent in others
What will be an ideal response?
Answer: There must be a suitable combination of surface rocks and water. Carbonate rocks (e.g. limestone) are absent in some places so that the relatively non-soluble rocks will not form karst. Even where such rocks are present there must be plentiful moisture (e.g. a humid climate) so chemical weathering can proceed quickly.
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What are the disadvantages of using biomass as a means to calculate primary productivity? What are some other means used to measure this productivity?
One reason land masses affect the development of belts of atmospheric pressure is because ____
a. land masses are consistently warmer than the oceans year-round b. of the evaporation from lakes and streams c. land masses cause Coriolis deflection d. land masses are drier e. of the differential heating of land and water
Dynamic forcing of upper air currents will create
A. upper air convergence at A that results in surface high pressure. B. upper air divergence at A that results in surface high pressure. C. upper air convergence at B that results in surface high pressure. D. upper air convergence at B that results in surface low pressure.
Physical rotation of platy minerals will contribute most to the development of foliation in ________ grade metamorphism
A) low- B) medium- C) medium-high- D) high-