Which of the following is a characteristic of a marine dead zone?
A) Undersea volcanic activity B) A low concentration of oxygen
C) Low nitrogen and phosphorus levels D) Abnormally salty or silty waters
B
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When chlorofluorocarbons are subjected to ultraviolet radiation, which of the following gases is released and rapidly destroys ozone?
A. nitrogen B. carbon C. carbon dioxide D. chlorine
More and more wind deflection occurs with height because
A. friction increases with height and deflection by the Coriolis Effect decreases with wind speed. B. friction increases with height and deflection by the Coriolis Effect increases with wind speed. C. friction decreases with height and deflection by the Coriolis Effect decreases with wind speed. D. friction decreases with height and deflection by the Coriolis Effect increases with wind speed.
A mineral has a value of 8 on the Mohs hardness scale. What could this represent?
A) The mineral is relatively hard. B) The mineral is the hardest of all minerals. C) The mineral is relatively soft. D) The mineral is the softest of all minerals.
The downslope movement of water-saturated surface sediment is called ____________________. Fill in the blank(s) with the appropriate word(s)