How is ocean acidification possibly linked to increased anthropogenic emissions of carbon dioxide (CO2)?
A) Atmospheric CO2 combines with atmospheric moisture forming a light carbonic acid forms (H2CO3), that is precipitated over the world's oceans.
B) Thermohaline circulation exchanges carbon between surface dissolved organic carbon and deep layers of dissolved inorganic carbon.
C) Increased warming results in glacial melt and more runoff of surface pollutants that can contribute to ocean acidification.
D) Oceans may absorb much of the concentrations of rising CO2. When dissolved CO2 mixes with saltwater, carbonic acid forms (H2CO3).
E) Increased photosynthetic activity in phytoplankton resulting from increased atmospheric CO2 concentrations results in acidification due to a complex chemical reaction during plant decay.
D
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How many rotating updrafts are found within a supercell storm?
A. 1 B. 2 C. 3 D. 4
Which of the following is an indication that Russia is no longer a world power?
A. Russia is still the largest country by area in the world. B. Russia had to use overwhelming force to defeat the Chechens. C. Alcoholism is a serious health problem. D. Russia is ranked toward the bottom of the Corruption Perceptions Index (CPI)
The planet ________ is characterized by a strong greenhouse effect
Fill in the blank(s) with the appropriate word(s).
The U.S. agency charged with slowing soil degradation is the ________
A) Conservation Integration Service B) Soil Aggregation Service C) Natural Resources Conservation Service D) Soil Degradation Minimization Service E) Agricultural Standards Agency