The future worldwide use of irrigation
A) is expected to double in the next 20 years due to increasing demands for food.
B) is limited by the availability of freshwater, waterlogging, and salinization of soils.
C) depends on new technologies to extract more groundwater.
D) will require increased reliance on new hydrogen technologies to produce freshwater.
B
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Shield volcanoes are composed primarily of
A) basalt lava flows. B) andesite lava flows. C) rhyolite lava flows.
Allocation is ________
A) the management of the location and relative amounts of different forest uses B) the loss of biodiversity of forest areas C) the creation of agricultural lands D) naturally reforesting specific areas E) the creation of even-aged stands for greater biodiversity
The Roman Empire introduced______________ to Europe.
-currency -specialization of goods -exploration -both a common infrastructure and specialization of goods -a common infrastructure
Describe how contact metamorphism occurs. What are the important factors that cause rocks to alter in
this type of metamorphism? What will be an ideal response?