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#3 Earth
The distance from the sun to the sun is (149,600,000 km) or (1.0 astronomical units)
-The Earth is not perfectly round, the north and south poles are slightly flattened.
-Oceans cover about 71 percent of the earths surface and contain 20 million tons if gold.
-Only about 10 percent of these oceans have been explored by people.

http://courseweb.hopkinsschools.org/course/view.php?id=1814