You feel uncomfortably warm on a muggy day because water molecules are
A) evaporating from moist skin.
B) condensing on your skin.
C) preventing condensation on moist skin.
D) condensing in the air.
B
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Among the top ten countries from which Australia imports the most are China, USA, and:
A) Canada B) Chile C) Saudi Arabia D) Singapore
Daily and seasonal temperature cycles depend primarily on:
A) only solar radiation. B) only terrestrial radiation. C) the combined effects of solar and terrestrial radiation. D) distance from the Sun. E) friction between the wind and Earth surface.
Approximately what percentage of the total caloric content of food is the human body able to extract?
A) 10 to 30% B) 40 to 60% C) 50-70% D) 70-90%
A mass of water above base level in a stream has ________ energy; as it flows downstream, this energy becomes ________ energy
A) kinetic; potential B) potential; kinetic C) latent; potential D) kinetic; kinetic E) potential; potential