____ are a type of lithostratigraphic unit with distinctive upper and lower boundaries
A)Biozones
B)Stratotypes
C)Formations
D)Systems
E)Zones
C
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Population growth scenarios project that at medium fertility rates the world population will level off at 10 billion.
Answer the following statement(s) true (T) or false (F)
Each number on this figure refers to a location depicting groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which one would have groundwater flowing to the left?
A) 1
B) 2
C) 3
D) 4
E) 5
Silica is a term for oxygen combined with silicon.
Answer the following statement true (T) or false (F)
What type of reaction occurs when a-ketoglutarate is converted to succinate in steps 4 and 5 of the citric acid cycle?
A) oxidative carboxylation B) oxidative decarboxylation C) reductive carboxylation D) reductive decarboxylation