The earliest atmosphere of Earth was ____
A)essentially the same as our modern atmosphere
B)composed entirely of nitrogen
C)composed of ozone and hydrogen
D)blown into space by solar wind
E)composed entirely of ozone
D
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Dew PointFor the following questions refer to the temperature and dew point data in the following cities: CityAir Temperature (ºC)Dew Point (ºC)City A3524City B-12-12City C-1-6City D106Which of the following procedures will increase the relative humidity in a home during the winter?
A. lowering the temperature of the air inside the home B. taking a shower and letting the air circulate in the home C. increasing the thermostat setting D. sealing the house against drafts
One strand of DNA has the sequence CAGTC. The opposite strand has the sequence
A. TCAGT. B. GTCAG. C. ATCGA. D. none of the above
In which reservoir does water reside for the
shortest time? What will be an ideal response?
Organisms that dwell in dark caves, in wells, or on the ocean floor often depend on which of the following biogeochemical processes?
A) chemosynthesis B) endogenic processes C) nutrient leaching D) photosynthesis E) nitrogen fixation