Why is ozone concentrated in a particular range of levels in the atmosphere?
A) It requires a catalyst, an isolated oxygen atom, and an oxygen molecule, all of which occur in sufficient quantities at that range of levels.
B) It is formed from air pollution that reaches that level in sufficient quantities to form ozone.
C) It requires a unique temperature and light level which occur at that range in the atmosphere.
D) It reflects light back into space at that level, and the energy from that reaction fuels the formation of ozone.
A
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Which of the following statements about environmental conditions in Russia is true?
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In Los Angeles, photochemical smog
A) is relatively uniform throughout the metropolitan area. B) is relatively constant throughout the day and night. C) varies throughout the day and night. D) varies throughout the day and night and is relatively uniform throughout the metropolitan area.
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A) evaporation B) degassing C) transpiration D) infiltration