The greater strength of jet stream winds during winter is due to:
A) greater horizontal temperature contrasts.
B) greater air density.
C) warmer temperatures at high altitudes.
D) stronger Coriolis effect.
E) lower humidity.
A
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Geology can help us learn about Earth's past by studying
a) why continents have different regions b) why a landscape looks the way it does c) how life in the past was different than today d) how global climate has changed since the ice ages e) all of these
The IUPAC name for one of the freons is 1,1,1-trichloro-2-fluoroethane. How many other constitutional isomers are there of this compound?
A) 1 B) 2 C) 3 D) 4
Which definition of oxidation is most useful when considering the oxidation of primary or secondary alcohols?
A) gain of oxygen B) loss of electrons C) loss of hydrogen D) None of these, 1° and 2° alcohols are not oxidized.
From where does the food that most city-dwellers consume originate?
A) farms surrounding the suburbs and from long distances away from the city B) technologically advanced underground farms C) factories that produce food from plastic D) farms within the city limits