Rocks of the shield are ____
A)exclusively igneous
B)exclusively metamorphic
C)exclusively sedimentary
D)primarily igneous and metamorphic
E)primarily igneous and sedimentary
D
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Discuss the relative merits of coal and nuclear power as energy supplies for the 21st century
What will be an ideal response?
Which is an example of coastal upwelling affecting weather onshore?
a. Cold water is transported away from the shore causing abnormally high temperatures. b. Southerly winds bring warm temperatures and dry weather. c. Cold water is brought to the surface that chills the air above, inducing cool, wet weather. d. A warm-water pool accumulates and warm moist air rises, inducing rainfall. e. Dry, cold air is transported from the north, inducing drought conditions.
True or False: Oxygen most likely accumulated in the atmosphere very gradually after the appearance of photosynthetic organisms, which consume carbon dioxide while manufacturing oxygen
Indicate whether this statement is true or false.
The use of tree rings to study past climates is known as dendroclimatology
Indicate whether the statement is true or false