A major population challenge in Japan is
A. large numbers of children
B. an unbalanced sex ratio
C. an aging population
D. massive emigration
C. an aging population
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Match the metamorphic rock to the metamorphic grade. (Note: Some answers may be used more than once.)
A) High-grade metamorphism B) Low-grade metamorphism C) Medium-grade metamorphism 1) Slate 2) Gneiss 3) Schist 4) Phyllite
Which statement regarding cities is FALSE?
a. They must import resources from far away. b. They rely on large expanses of land for ecosystem services. c. People living in cities feel more connected to nature, particularly since HDTV. d. Cities tend to concentrate people, allowing for more efficient consumption of resources.
________ is the most abundant of the variable gases in the atmosphere
Fill in the blank(s) with the appropriate word(s).
The force that would cause a stationary parcel of air to begin to move horizontally is called the?
a. ?Coriolis force. b. ?pressure gradient force. c. ?centripetal force. d. ?frictional force. e. ?gravitational force.