The study of the location of fracture zones has provided evidence to support the theory of plate tectonics because a. fracture zones indicate the locations of once-active underwater faults. b. fracture zones prevent subduction at ocean trenches. c. fracture zones allow old, oceanic crust to be subducted by continental crust. d. fracture zones indicate that tectonic plates are always stationary.

Which statement best explains the relationship between an area's geography and the temperature of its surface water? areas at low altitudes have the warmest water because they receive the most direct sunlight. areas at low altitudes have the warmest water because they have the least change in temperature throughout the year. areas at high latitudes have the warmest water because their days are the longest. areas at high latitudes have the warmest water because they have the longest seasons.