Approximately what percentage of the earth’s surface is covered by water?
  1. 50%
  2. 70%
  3. 90%
  4. 35%
Explanation
Answer: B - Approximately 70% of the earth’s surface is covered by water. Oceans make up most of this water, connected as one continuous body of water. Seas and lakes are included in this percentage as well, although they are not connected.
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