Consider the following processes: respiration, chemosynthesis, combustion of firewood, and photosynthesis. How many of these result in the release of oxygen into the atmosphere?

A) none B) 1 C) 2 D) 3 E) all 4


Answer: B

Environmental & Atmospheric Sciences

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Indicate whether the statement is true or false

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Conserved Gained Lost Created

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Assume that the actual vapor content of the air remains constant over the course of a day. How does the relative humidity at 2:00 p.m. probably compare to the relative humidity at 5:00 a.m.?

A) The relative humidity at 2:00 p.m. is lower. B) The relative humidity is the same at 2:00 p.m. as at 5:00 a.m. C) The relative humidity at 2:00 p.m. is higher.

Environmental & Atmospheric Sciences