China's rail and road network is most dense in the:
A) north
B) south
C) east
D) west
C
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Name, not necessarily in detail, the steps that make snow metamorphose into ice
What will be an ideal response?
The tropical disturbances that affect the Atlantic Ocean, Caribbean Sea, and the Americas, mostly form over
A) the Gulf of Mexico. B) western Africa, south of the Sahara Desert. C) the Caribbean Sea. D) the western Atlantic Ocean.
Consider the following processes: respiration, chemosynthesis, combustion of firewood, and photosynthesis. How many of these result in the release of oxygen into the atmosphere?
A) none B) 1 C) 2 D) 3 E) all 4
Outside of the crust, the layer that scientists know the most about is the mantle. Other than via seismic waves, how else do geologists obtain information about the composition of the mantle?
A) Drill cores B) Volcanoes C) Sonar D) Seismic waves