What was the single most important innovation stimulating the international division of labor?
A) sewing machine
B) railroad
C) metal-hulled, ocean-going steamship
D) cargo truck
E) jet-engine airplane
Answer: C
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Suppose a conventional jet airliner is at an altitude of 10 km, the outside air pressure is 250 hPa, and the outside temperature is -60°C. What would be the air temperature inside the jet if the outside air is brought inside and compressed to a 1000 hPa pressure? (Assume that 1000 hPa pressure is equivalent to 0 m altitude.)
A. 60°C B. 40°C C. 0°C D. -60°C
What would happen to the seasons if the tilt of the axis was opposite to what it is now?
A. Only winter and summer would reverse. B. Only fall and spring would reverse. C. All seasons would reverse. D. None would reverse.
An instrument that measures air pressure using a partially evacuated chamber is called a(n) ________ barometer
Fill in the blank(s) with correct word
Every metamorphic rock has a parent rock from which it formed
Indicate whether the statement is true or false