The net effect of wave ________ is to move sand in a series of arcs along the beach face.
A. rip currents
B. backwash
C. run up and return
D. refraction
E. oscillation
Answer: C
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Eternal inflation refers to
A. the presence of a distinct beginning of time. B. the possibility that our universe is only a patch of a greater universe and that the process of universe spawning will continue forever. C. the observation that cosmic inflation could eventually curve back in on itself, causing its opposite: the compression of space. D. cosmic inflation inflating itself such that its own inflation is self-generating.
A dense canopy of trees, little leaf litter, and poor soil characterize
A) tropical forests. B) temperate forests. C) coniferous forests. D) chaparral.
Earth system science focuses largely on solid Earth processes
Indicate whether the statement is true or false
The Moors brought their _____ faith and civilization to the Iberian Peninsula
a. Jewish b. Protestant c. Catholic d. Eastern Orthodox e. Islam