Why does the continental crust rise higher than the oceanic crust? a) the oceanic crust is younger. b) the continental crust is thicker. c) the continental crust is less dense. d) the oceanic crust is made up of primarily granite.

What is the "great pacific garbage patch"? (a) a large area of marine debris concentrated by rotating ocean currents (b) a large area around the pacific rim where debris collects from natural disasters such as tsunamis (c) an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability (d) a large trash dump located in hawaii

Distance that the transcontinental railroad covered from omaha to san francisco.

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