ANSWERS: 2
  • http://www.physlink.com/Education/askexperts/ae419.cfm Gives one answer. http://www.physlink.com/Education/askexperts/ae419.cfm gives another and http://en.wikipedia.org/wiki/Flat_Earth gives a different view, however 'volume' appears to not be an issue at all, just area. ;-)
  • I think in a geologic sense you can find this; but your question made me think in terms of life-forms. I have read there have been five mass extinctions in earths history, so each might be called volume-I, volume-II, and so on.

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