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DragonflyTV Kids Do Science - Cactus

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Uploaded by on Jul 6, 2007

We're Mark and Alex, and we're junior docents at the Arizona - Sonora Desert Museum. We do presentations for museum visitors about the plants and animals you can see here, especially the saguaro cactus. One visitor asked a question about the holes that are visible in the arms of the cactus: Do the holes in a saguaro cactus always face the same direction?

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