Zia, you can see why your villagers died, but it's important that you follow certain steps in order to preserve that information. If you open your game and see that some villagers have died, you should quit the game and go look at the game log. It will allow you an interesting look at what has gone on in your game.
You can find the game log (ldwLog.txt) in the Virtual Villagers program directory, and it can be browsed with any text editor or word processing program. You must do this before launching the game again, since the data is overwritten each time you run Virtual Villagers. You can rename the file if you want to preserve it to look at later.
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Barbara
Unicorn
Last Day of Work