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

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

________ is the most abundant of the variable gases in the atmosphere

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences