The source of heating in the thermosphere is the absorption of ________.
A) infrared rays from the Sun
B) infrared rays from the Earth
C) visible energy from the Sun
D) ultraviolet rays from the Sun
E) light rays reflected from the Earth
Question 2
Which of the following is NOT a natural characteristic of the troposphere?
A) It has most of the atmospheric water vapor.
B) It is the lowest layer of the atmosphere.
C) It has the highest pressures in the atmosphere.
D) It has the hottest temperatures in the atmosphere.
E) It is the layer associated with weather.
Head-Tail Source NGC 1265
Examples of USP labels Source: Courtesy of Novartis Pharmaceuticals Corporation and Mallinckrodt Pha
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