Which is TRUE regarding strategic minerals?
A) China is the world's largest producer of strategic minerals.
B) China is the world's largest consumer of strategic minerals.
C) The world has about 1000 years worth of these minerals at current rates of consumption.
D) The United States has increasingly depended on imports of these in the past fifty years.
E) The Middle East is the world's most significant repository of strategic minerals.
D
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A) ions. B) molecules of air. C) other water vapor molecules. D) condensation nuclei. E) protons.
It is difficult to determine long-term trends in rare events such as extreme heat or extreme cold episodes using graphs such as this because [INSERT FIGURE 3-32. INCLUDE CAPTION]
A) data for rare events is not available prior to 1980 B) rare events might be the result of random variation C) rare weather events are usually caused by earthquakes rather than atmospheric activity D) rare events must be averaged over 25-year periods
Which of the following reactions is involved in the deactivation of phosphatidylinositol secondary messengers?
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