THE SULFUR-OXIDIZING PROKARYOTES. Biological oxidation of hydrogen sulfide to sulfate is one of the major reactions of the global sulfur cycle. Reduced inorganic sulfur compounds (referred to below as sulfur) are exclusively oxidized by prokaryotes, and sulfate is the major oxidation product. Sulfur oxidation in members of theEukarya is mediated by lithoautotrophic bacterial endosymbionts (44).
In simpler terms: the dew point, or frost point, is the temperature at which dew or frost will form should the air temperature fall sufficiently. Other things being equal, as the temperature falls, the relative humidity rises, reaching 100% at the dew point, at least at ground level.ew point temperature is never greater than the air temperature, since the relative humidity cannot exceed 100%.
Best Answer: Ah Judy, there isn't such a thing as an average relative humidity. This is because it changes a lot only in the course of the day. How much moisture the air can contain depends on the temperature. The warmer it is, the more moisture it can contain. That is the absolute humidity that is the volume of water per volume of air. The relative humidity, which is what you measure with a hygrometer, is the percentage of moisture to achieve full saturation for a given temperature. But since the temperature varies a lot during the course of a day, so does the relative humidity.