Why do westerly winds prevail at upper altitudes?
A) absence of friction
B) rotation of the earth and equator to pole temperature contrast
C) rotation of the earth
D) equator to pole temperature contrast
E) lower air density
B
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What is a main hazard of shield volcanoes?
a) hot fragments thrown a short distance from the volcano b) burning, building collapse, and suffocation from widely distributed pyroclastic material c) destruction by moderately fluid lava flows that can flow far from the volcano d) volcanic mudflows and landslides e) relatively small pyroclastic eruptions caused by localized explosions or collapse
What do less-developed countries have moreof compared to more-developed countries?
A. population B. income per person C. consumption per person D. waste per person
Cities in developing countries have been shrinking as millions of people emigrate out in search of work
Indicate whether the statement is true or false.
What is an amphidromic point?
A) A node in the center of the Earth B) A node in the center of an ocean basin C) A node in the center of the Earth-moon orbit D) A node that indicates the peak in a tidal wave's crest