What does a total fertility rate of 2.1 indicate?
A) infant mortality rate
B) rate of natural increase (RNI)
C) crude birthrate (CBR)
D) life expectancy
E) total fertility rate (TFR)
E) total fertility rate (TFR)
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Coarse-grained regolith where 20 to 80 percent of the fragments are greater than 2 millimeters in size is called
A) soil. B) rock. C) earth. D) debris.
Debris flows typically:
a. leave levees. b. occur so slowly that motion cannot be witnessed by observers. c. involve little water. d. move along a curved plane of slippage. e. occur by free fall through air.
The rainshadow on the mountain in the diagram would be in the area marked
A. From A to B B. From C to D C. At A and at D D. At A and at B E. From B to C
Overpumping groundwater in coastal areas can cause ________ to move into aquifers, making the water undrinkable
A) VOCs B) untreated sewage C) saltwater D) hard water ions E) suspended solids