Which of the following is NOT a cause of ice ages?
a. Changes in ocean circulation
b. Changes in Earth’s magnetic field
c. Variations in Earth’s orbit
d. Volcanic activity
Answer: b. Changes in Earth's magnetic field
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The sea surface: a. is a smooth ellipsoid over the entire ocean
b. has mounts of water over regions of great depth. c. varies only due to waves and tides. d. has mounts of water over undersea mountains or ridges.
An increasingly centralized Soviet state was achieved through
A) perestroika. B) glasnost. C) state-controlled education. D) Soviet-styled fashion. E) Soviet-styled architecture and state-controlled agriculture and industry.
The processes that lead to geological erosion are essential to the movement of phosphorous through the biosphere
Indicate whether the statement is true or false
In which countries will the most people be affected by a ??-m rise in sea
level? What will be an ideal response?