Most ocean surface currents are due to
A. river flow into the ocean.
B. melting polar glaciers.
C. local winds.
D. global winds.
Answer: D
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Adding fertilizer to most aquatic systems results in
A) increased growth of phytoplankton and hypoxic conditions. B) increased growth of phytoplankton and hyperoxic conditions. C) decreased growth of phytoplankton and hypoxic conditions. D) decreased growth of phytoplankton and hyperoxic conditions.
When solid sodium hydroxide is dissolved in water which of the following species is not present in the solution?
A) H2O(l) B) Na+(aq) C) OH-(aq) D) None, they are all present.
Which of the following occurs when myosin hydrolyzes ATP?
A) dissociation of the actin-myosin complex and muscle contraction B) dissociation of the actin-myosin complex and muscle relaxation C) formation of the actin-myosin complex and muscle contraction D) formation of the actin-myosin complex and muscle relaxation
Match the geologic era to the correct translation
A) Old Life B) New Life C) Middle Life 1) Mesozoic 2) Paleozoic 3) Cenozoic