1. the slowly increasing distance between south america and africa is due to blank.target 1 of 7 2. old faithful geyser at yellowstone national park in the united states acquires its energy from a blank.target 2 of 7 3. layered blankexposed by erosion can be seen when looking at the grand canyon in the united states.target 3 of 7 4. australia is composed of relatively old and thick blank.target 4 of 7 5. the extremely deep ocean marianas trench is a result of blank.target 5 of 7 6. blankfound in the atlantic ocean between north america and europe is composed of dense and relatively young rock.target 6 of 7 7. the earthquakes that occur in southern california generally occur along a blank