Rusting steel is an example of _____ change.
a. Compositional
b. Physical
c. Chemical
d. Morphological
Answer: c. Chemical
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The earliest fish were
a. ray-finned. d. jawless. b. bony-finned. e. lungfish. c. cartilaginous
The One Child Policy was effective at reducing the natural increase rate in
A) India. B) Nigeria. C) Sierra Leone. D) China. E) Cape Verde.
Physical geography's major function is to study and learn about:
a. human activity and the results thereof.
b. Earth's environments and the processes that influence them.
c. the physical and human features of a region.
d. the composition of Earth's crust.
Three seismograms for a single earthquake with an epicenter in Columbia are shown below. The data are from stations that were at very different distances from the epicenter. Arrows denote arrival of P and S waves. Note: Vertical scales are not all the same. 
Which seismic wave arrived between 11-12 on the bottom seismogram (station ASCN)?
A. P-wave B. Surface wave C. S-wave