Which of the following patterns refers to a quasi-biennial oscillation?

A. reversal of stratospheric winds above the tropics
B. 2 million-year cycle of ice advances and retreats
C. cycle of increase and decrease in carbon dioxide concentrations
D. 22-year cycle of sunspots


Answer: A

Environmental & Atmospheric Sciences

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________ percent of London, England's citizens are born outside of the United Kingdom

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Hess's 1960s theory of mantle convection and seafloor spreading was essentially correct.

Answer the following statement true (T) or false (F)

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