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Surface currents are powered by Earth's various wind patterns. a. b. 2 & 4 & 0 \\ That is why it is easier to float in the ocean than in a fresh-water swimming pool or lake, and fresh water floats on top of salty ocean water. a. circulates heat c. promotes eutrophication when agricultural practices allow it to get into waterways Denser oceanic crust is subducted underneath continental crust, which forms oceanic trenches and magma, creating volcanoes (Ring of Fire). Colder, saline water masses are more dense and sink; while warmer, fresher water masses are less dense and rise. d. grassland With our present atmosphere, Earth's mean surface temperature is approximately +15C. b. increased death of sea lions in the Galapagos Islands What electron energy is required to obtain the diffraction pattern for a surface with crystal spacing of 4.0 A? c. Smoke emitted from forest fires e. it means that people will suffer, The Law of Conversation of Matter says b. the food web corollary Alternatively, explore the Understanding Global Change Infographic and find new topics that are of interest and/or locally relevant to you. c. none of the above e. have numerous predators that cause an increase in the number of predators, All of the following are true of El Nino-Southern Oscillation (ENSO) EXCEPT: 2 ). e. It underlies eastern Quebec and is a limited source of freshwater. a. Which of the following would NOT increase biological oxygen demand (BOD)? c. Convergent How much is the capacitance of a capacitor that draws 2mA2\text{ mA}2mA of current from a 10-Vac10\text{-Vac}10-Vac generator whose frequency is 3.183kHz3.183\text{ kHz}3.183kHz? When Shang-Ping Xie, a climate scientist at the Scripps Institution of Oceanography, saw Hus study, he immediately suspected that the structure of the oceannot windsplayed a leading role in the speedup. The simplified map in Fig. At the ocean surface, currents are primarily driven by winds. b. some intraspecies; greater c. Soil C \end{array}\right], \quad B=\left[\begin{array}{rrr} All of the above