It must also contain enough food and water to last 40 days (40 days is right I think).
That's just the part when it rained. It still took time for the water to disappear. It seems that I recall that Genesis says they were cooped up in the ark for about a year.
Speaking personally, I find few things more awesome than contemplating this vast and majestic process of evolution, the ebb and flow of successive biotas through geological time. Creationists and others who cannot for ideological or religious reasons accept the fact of evolution miss out a great deal, and are left with a claustrophobic little universe in which nothing happens and nothing changes.
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M. Alan Kazlev
™ Version 4.2